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Finding the Fourth Proportional to 539,136.60, 808,704.90 and 444,658.20

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Solution

The fourth proportional to 539,136.60, 808,704.90 and 444,658.20 is: 666,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,136.60 : 808,704.90 = 444,658.20 : x
  2. Step 2: Convert to fraction form
    539,136.60/808,704.90 = 444,658.20/x
  3. Step 3: Cross multiply
    539,136.60x = 808,704.90 × 444,658.20
  4. Step 4: Simplify right side
    539,136.60x = 359,597,265,165.18
  5. Step 5: Solve for x
    x = 359,597,265,165.18/539,136.60
  6. Step 6: Final answer
    x = 666,987.30

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Double scale
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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.