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Finding the Fourth Proportional to 71,116.80, 106,585.92 and 36,065.28

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Solution

The fourth proportional to 71,116.80, 106,585.92 and 36,065.28 is: 54,052.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,116.80 : 106,585.92 = 36,065.28 : x
  2. Step 2: Convert to fraction form
    71,116.80/106,585.92 = 36,065.28/x
  3. Step 3: Cross multiply
    71,116.80x = 106,585.92 × 36,065.28
  4. Step 4: Simplify right side
    71,116.80x = 3,844,051,048.86
  5. Step 5: Solve for x
    x = 3,844,051,048.86/71,116.80
  6. Step 6: Final answer
    x = 54,052.64

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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.