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Finding the Fourth Proportional to 134,672.50, 185,839.70 and 74,240.02

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Solution

The fourth proportional to 134,672.50, 185,839.70 and 74,240.02 is: 102,446.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,672.50 : 185,839.70 = 74,240.02 : x
  2. Step 2: Convert to fraction form
    134,672.50/185,839.70 = 74,240.02/x
  3. Step 3: Cross multiply
    134,672.50x = 185,839.70 × 74,240.02
  4. Step 4: Simplify right side
    134,672.50x = 13,796,743,044.79
  5. Step 5: Solve for x
    x = 13,796,743,044.79/134,672.50
  6. Step 6: Final answer
    x = 102,446.62

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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.