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Finding the Fourth Proportional to 71,210.40, 106,660.08 and 58,691.04

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Solution

The fourth proportional to 71,210.40, 106,660.08 and 58,691.04 is: 87,908.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,210.40 : 106,660.08 = 58,691.04 : x
  2. Step 2: Convert to fraction form
    71,210.40/106,660.08 = 58,691.04/x
  3. Step 3: Cross multiply
    71,210.40x = 106,660.08 × 58,691.04
  4. Step 4: Simplify right side
    71,210.40x = 6,259,991,021.68
  5. Step 5: Solve for x
    x = 6,259,991,021.68/71,210.40
  6. Step 6: Final answer
    x = 87,908.38

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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.