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Finding the Fourth Proportional to 8,708.87, 13,065.60 and 5,004.47

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Solution

The fourth proportional to 8,708.87, 13,065.60 and 5,004.47 is: 7,508.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.87 : 13,065.60 = 5,004.47 : x
  2. Step 2: Convert to fraction form
    8,708.87/13,065.60 = 5,004.47/x
  3. Step 3: Cross multiply
    8,708.87x = 13,065.60 × 5,004.47
  4. Step 4: Simplify right side
    8,708.87x = 65,386,337.90
  5. Step 5: Solve for x
    x = 65,386,337.90/8,708.87
  6. Step 6: Final answer
    x = 7,508.02

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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.