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Finding the Fourth Proportional to 506,140.20, 698,452.20 and 291,287.70

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Solution

The fourth proportional to 506,140.20, 698,452.20 and 291,287.70 is: 401,964.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,140.20 : 698,452.20 = 291,287.70 : x
  2. Step 2: Convert to fraction form
    506,140.20/698,452.20 = 291,287.70/x
  3. Step 3: Cross multiply
    506,140.20x = 698,452.20 × 291,287.70
  4. Step 4: Simplify right side
    506,140.20x = 203,450,534,897.94
  5. Step 5: Solve for x
    x = 203,450,534,897.94/506,140.20
  6. Step 6: Final answer
    x = 401,964.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.