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Finding the Fourth Proportional to 26,308.56, 36,310.52 and 15,553

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Solution

The fourth proportional to 26,308.56, 36,310.52 and 15,553 is: 21,465.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,308.56 : 36,310.52 = 15,553 : x
  2. Step 2: Convert to fraction form
    26,308.56/36,310.52 = 15,553/x
  3. Step 3: Cross multiply
    26,308.56x = 36,310.52 × 15,553
  4. Step 4: Simplify right side
    26,308.56x = 564,737,517.56
  5. Step 5: Solve for x
    x = 564,737,517.56/26,308.56
  6. Step 6: Final answer
    x = 21,465.92

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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.