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Finding the Fourth Proportional to 10,553.76, 15,825.28 and 3,531.28

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Solution

The fourth proportional to 10,553.76, 15,825.28 and 3,531.28 is: 5,295.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,553.76 : 15,825.28 = 3,531.28 : x
  2. Step 2: Convert to fraction form
    10,553.76/15,825.28 = 3,531.28/x
  3. Step 3: Cross multiply
    10,553.76x = 15,825.28 × 3,531.28
  4. Step 4: Simplify right side
    10,553.76x = 55,883,494.76
  5. Step 5: Solve for x
    x = 55,883,494.76/10,553.76
  6. Step 6: Final answer
    x = 5,295.13

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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.