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Finding the Fourth Proportional to 664,871.42, 997,307.09 and 166,235.42

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Solution

The fourth proportional to 664,871.42, 997,307.09 and 166,235.42 is: 249,353.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,871.42 : 997,307.09 = 166,235.42 : x
  2. Step 2: Convert to fraction form
    664,871.42/997,307.09 = 166,235.42/x
  3. Step 3: Cross multiply
    664,871.42x = 997,307.09 × 166,235.42
  4. Step 4: Simplify right side
    664,871.42x = 165,787,762,143.95
  5. Step 5: Solve for x
    x = 165,787,762,143.95/664,871.42
  6. Step 6: Final answer
    x = 249,353.12

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Half scale
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Double scale
Find fourth proportional to 664,872.42, 997,308.58 and 166,236.42
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.