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Finding the Fourth Proportional to 114,940.91, 172,490.65 and 40,061.68

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Solution

The fourth proportional to 114,940.91, 172,490.65 and 40,061.68 is: 60,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,940.91 : 172,490.65 = 40,061.68 : x
  2. Step 2: Convert to fraction form
    114,940.91/172,490.65 = 40,061.68/x
  3. Step 3: Cross multiply
    114,940.91x = 172,490.65 × 40,061.68
  4. Step 4: Simplify right side
    114,940.91x = 6,910,265,223.29
  5. Step 5: Solve for x
    x = 6,910,265,223.29/114,940.91
  6. Step 6: Final answer
    x = 60,120.15

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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.