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Finding the Fourth Proportional to 15,047.28, 22,586.16 and 8,819.28

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Solution

The fourth proportional to 15,047.28, 22,586.16 and 8,819.28 is: 13,237.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.28 : 22,586.16 = 8,819.28 : x
  2. Step 2: Convert to fraction form
    15,047.28/22,586.16 = 8,819.28/x
  3. Step 3: Cross multiply
    15,047.28x = 22,586.16 × 8,819.28
  4. Step 4: Simplify right side
    15,047.28x = 199,193,669.16
  5. Step 5: Solve for x
    x = 199,193,669.16/15,047.28
  6. Step 6: Final answer
    x = 13,237.85

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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.