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Finding the Fourth Proportional to 124,543.92, 171,872.76 and 67,955.76

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Solution

The fourth proportional to 124,543.92, 171,872.76 and 67,955.76 is: 93,780.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,543.92 : 171,872.76 = 67,955.76 : x
  2. Step 2: Convert to fraction form
    124,543.92/171,872.76 = 67,955.76/x
  3. Step 3: Cross multiply
    124,543.92x = 171,872.76 × 67,955.76
  4. Step 4: Simplify right side
    124,543.92x = 11,679,744,029.10
  5. Step 5: Solve for x
    x = 11,679,744,029.10/124,543.92
  6. Step 6: Final answer
    x = 93,780.12

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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.