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Finding the Fourth Proportional to 148,371.92, 204,641.56 and 103,049.96

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Solution

The fourth proportional to 148,371.92, 204,641.56 and 103,049.96 is: 142,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,371.92 : 204,641.56 = 103,049.96 : x
  2. Step 2: Convert to fraction form
    148,371.92/204,641.56 = 103,049.96/x
  3. Step 3: Cross multiply
    148,371.92x = 204,641.56 × 103,049.96
  4. Step 4: Simplify right side
    148,371.92x = 21,088,304,572.34
  5. Step 5: Solve for x
    x = 21,088,304,572.34/148,371.92
  6. Step 6: Final answer
    x = 142,131.37

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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.