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Finding the Fourth Proportional to 124,481.52, 171,782.64 and 67,892.88

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Solution

The fourth proportional to 124,481.52, 171,782.64 and 67,892.88 is: 93,691.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,481.52 : 171,782.64 = 67,892.88 : x
  2. Step 2: Convert to fraction form
    124,481.52/171,782.64 = 67,892.88/x
  3. Step 3: Cross multiply
    124,481.52x = 171,782.64 × 67,892.88
  4. Step 4: Simplify right side
    124,481.52x = 11,662,818,163.60
  5. Step 5: Solve for x
    x = 11,662,818,163.60/124,481.52
  6. Step 6: Final answer
    x = 93,691.16

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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.