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Finding the Fourth Proportional to 79,587.64, 109,834.14 and 47,744.92

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Solution

The fourth proportional to 79,587.64, 109,834.14 and 47,744.92 is: 65,889.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,587.64 : 109,834.14 = 47,744.92 : x
  2. Step 2: Convert to fraction form
    79,587.64/109,834.14 = 47,744.92/x
  3. Step 3: Cross multiply
    79,587.64x = 109,834.14 × 47,744.92
  4. Step 4: Simplify right side
    79,587.64x = 5,244,022,227.57
  5. Step 5: Solve for x
    x = 5,244,022,227.57/79,587.64
  6. Step 6: Final answer
    x = 65,889.91

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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.