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Finding the Fourth Proportional to 623,975,307.60, 935,962,961.40 and 442,576,779.60

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Solution

The fourth proportional to 623,975,307.60, 935,962,961.40 and 442,576,779.60 is: 663,865,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,975,307.60 : 935,962,961.40 = 442,576,779.60 : x
  2. Step 2: Convert to fraction form
    623,975,307.60/935,962,961.40 = 442,576,779.60/x
  3. Step 3: Cross multiply
    623,975,307.60x = 935,962,961.40 × 442,576,779.60
  4. Step 4: Simplify right side
    623,975,307.60x = 414,235,473,281,291,136
  5. Step 5: Solve for x
    x = 414,235,473,281,291,136/623,975,307.60
  6. Step 6: Final answer
    x = 663,865,169.40

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Half scale
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Double scale
Find fourth proportional to 623,975,308.60, 935,962,962.90 and 442,576,780.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.