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Finding the Fourth Proportional to 124,863.61, 186,999.49 and 71,584.54

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Solution

The fourth proportional to 124,863.61, 186,999.49 and 71,584.54 is: 107,207.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,863.61 : 186,999.49 = 71,584.54 : x
  2. Step 2: Convert to fraction form
    124,863.61/186,999.49 = 71,584.54/x
  3. Step 3: Cross multiply
    124,863.61x = 186,999.49 × 71,584.54
  4. Step 4: Simplify right side
    124,863.61x = 13,386,272,471.88
  5. Step 5: Solve for x
    x = 13,386,272,471.88/124,863.61
  6. Step 6: Final answer
    x = 107,207.16

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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.