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Finding the Fourth Proportional to 124,377.96, 171,635.94 and 67,787.40

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Solution

The fourth proportional to 124,377.96, 171,635.94 and 67,787.40 is: 93,543.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,377.96 : 171,635.94 = 67,787.40 : x
  2. Step 2: Convert to fraction form
    124,377.96/171,635.94 = 67,787.40/x
  3. Step 3: Cross multiply
    124,377.96x = 171,635.94 × 67,787.40
  4. Step 4: Simplify right side
    124,377.96x = 11,634,754,119.16
  5. Step 5: Solve for x
    x = 11,634,754,119.16/124,377.96
  6. Step 6: Final answer
    x = 93,543.54

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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.