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Finding the Fourth Proportional to 468,587.78, 702,908.90 and 131,654.69

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Solution

The fourth proportional to 468,587.78, 702,908.90 and 131,654.69 is: 197,489.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,587.78 : 702,908.90 = 131,654.69 : x
  2. Step 2: Convert to fraction form
    468,587.78/702,908.90 = 131,654.69/x
  3. Step 3: Cross multiply
    468,587.78x = 702,908.90 × 131,654.69
  4. Step 4: Simplify right side
    468,587.78x = 92,541,253,327.74
  5. Step 5: Solve for x
    x = 92,541,253,327.74/468,587.78
  6. Step 6: Final answer
    x = 197,489.69

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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.