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Finding the Fourth Proportional to 15,591.12, 23,391 and 8,670.48

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Solution

The fourth proportional to 15,591.12, 23,391 and 8,670.48 is: 13,008.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.12 : 23,391 = 8,670.48 : x
  2. Step 2: Convert to fraction form
    15,591.12/23,391 = 8,670.48/x
  3. Step 3: Cross multiply
    15,591.12x = 23,391 × 8,670.48
  4. Step 4: Simplify right side
    15,591.12x = 202,811,197.68
  5. Step 5: Solve for x
    x = 202,811,197.68/15,591.12
  6. Step 6: Final answer
    x = 13,008.12

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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.