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Finding the Fourth Proportional to 134,687.42, 185,869.96 and 74,260.44

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Solution

The fourth proportional to 134,687.42, 185,869.96 and 74,260.44 is: 102,480.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,687.42 : 185,869.96 = 74,260.44 : x
  2. Step 2: Convert to fraction form
    134,687.42/185,869.96 = 74,260.44/x
  3. Step 3: Cross multiply
    134,687.42x = 185,869.96 × 74,260.44
  4. Step 4: Simplify right side
    134,687.42x = 13,802,785,012.38
  5. Step 5: Solve for x
    x = 13,802,785,012.38/134,687.42
  6. Step 6: Final answer
    x = 102,480.14

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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.