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Finding the Fourth Proportional to 124,489.35, 186,471.45 and 84,532.86

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Solution

The fourth proportional to 124,489.35, 186,471.45 and 84,532.86 is: 126,620.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,489.35 : 186,471.45 = 84,532.86 : x
  2. Step 2: Convert to fraction form
    124,489.35/186,471.45 = 84,532.86/x
  3. Step 3: Cross multiply
    124,489.35x = 186,471.45 × 84,532.86
  4. Step 4: Simplify right side
    124,489.35x = 15,762,964,976.85
  5. Step 5: Solve for x
    x = 15,762,964,976.85/124,489.35
  6. Step 6: Final answer
    x = 126,620.99

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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.