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Finding the Fourth Proportional to 7,909.29, 10,915.38 and 4,372.44

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Solution

The fourth proportional to 7,909.29, 10,915.38 and 4,372.44 is: 6,034.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.29 : 10,915.38 = 4,372.44 : x
  2. Step 2: Convert to fraction form
    7,909.29/10,915.38 = 4,372.44/x
  3. Step 3: Cross multiply
    7,909.29x = 10,915.38 × 4,372.44
  4. Step 4: Simplify right side
    7,909.29x = 47,726,844.13
  5. Step 5: Solve for x
    x = 47,726,844.13/7,909.29
  6. Step 6: Final answer
    x = 6,034.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.