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Finding the Fourth Proportional to 15,700.60, 23,558.98 and 8,679.31

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Solution

The fourth proportional to 15,700.60, 23,558.98 and 8,679.31 is: 13,023.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,700.60 : 23,558.98 = 8,679.31 : x
  2. Step 2: Convert to fraction form
    15,700.60/23,558.98 = 8,679.31/x
  3. Step 3: Cross multiply
    15,700.60x = 23,558.98 × 8,679.31
  4. Step 4: Simplify right side
    15,700.60x = 204,475,610.11
  5. Step 5: Solve for x
    x = 204,475,610.11/15,700.60
  6. Step 6: Final answer
    x = 13,023.43

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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.