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Finding the Fourth Proportional to 124,572.87, 171,908.16 and 67,984.65

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Solution

The fourth proportional to 124,572.87, 171,908.16 and 67,984.65 is: 93,817.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,572.87 : 171,908.16 = 67,984.65 : x
  2. Step 2: Convert to fraction form
    124,572.87/171,908.16 = 67,984.65/x
  3. Step 3: Cross multiply
    124,572.87x = 171,908.16 × 67,984.65
  4. Step 4: Simplify right side
    124,572.87x = 11,687,114,890.28
  5. Step 5: Solve for x
    x = 11,687,114,890.28/124,572.87
  6. Step 6: Final answer
    x = 93,817.50

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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.