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Finding the Fourth Proportional to 5,755.20, 8,591.04 and 5,328

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Solution

The fourth proportional to 5,755.20, 8,591.04 and 5,328 is: 7,953.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,755.20 : 8,591.04 = 5,328 : x
  2. Step 2: Convert to fraction form
    5,755.20/8,591.04 = 5,328/x
  3. Step 3: Cross multiply
    5,755.20x = 8,591.04 × 5,328
  4. Step 4: Simplify right side
    5,755.20x = 45,773,061.12
  5. Step 5: Solve for x
    x = 45,773,061.12/5,755.20
  6. Step 6: Final answer
    x = 7,953.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.