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Finding the Fourth Proportional to 10,335.76, 15,500.90 and 4,491

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Solution

The fourth proportional to 10,335.76, 15,500.90 and 4,491 is: 6,735.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,335.76 : 15,500.90 = 4,491 : x
  2. Step 2: Convert to fraction form
    10,335.76/15,500.90 = 4,491/x
  3. Step 3: Cross multiply
    10,335.76x = 15,500.90 × 4,491
  4. Step 4: Simplify right side
    10,335.76x = 69,614,553.13
  5. Step 5: Solve for x
    x = 69,614,553.13/10,335.76
  6. Step 6: Final answer
    x = 6,735.31

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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.