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Finding the Fourth Proportional to 71,182.60, 106,551.55 and 47,509.54

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Solution

The fourth proportional to 71,182.60, 106,551.55 and 47,509.54 is: 71,115.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,182.60 : 106,551.55 = 47,509.54 : x
  2. Step 2: Convert to fraction form
    71,182.60/106,551.55 = 47,509.54/x
  3. Step 3: Cross multiply
    71,182.60x = 106,551.55 × 47,509.54
  4. Step 4: Simplify right side
    71,182.60x = 5,062,214,919.80
  5. Step 5: Solve for x
    x = 5,062,214,919.80/71,182.60
  6. Step 6: Final answer
    x = 71,115.91

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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.