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Finding the Fourth Proportional to 661,704.10, 992,556.15 and 409,761.70

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Solution

The fourth proportional to 661,704.10, 992,556.15 and 409,761.70 is: 614,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,704.10 : 992,556.15 = 409,761.70 : x
  2. Step 2: Convert to fraction form
    661,704.10/992,556.15 = 409,761.70/x
  3. Step 3: Cross multiply
    661,704.10x = 992,556.15 × 409,761.70
  4. Step 4: Simplify right side
    661,704.10x = 406,711,495,369.46
  5. Step 5: Solve for x
    x = 406,711,495,369.46/661,704.10
  6. Step 6: Final answer
    x = 614,642.55

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Similar ratio
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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.