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Finding the Fourth Proportional to 9,151.76, 13,720.14 and 5,864

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Solution

The fourth proportional to 9,151.76, 13,720.14 and 5,864 is: 8,791.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.76 : 13,720.14 = 5,864 : x
  2. Step 2: Convert to fraction form
    9,151.76/13,720.14 = 5,864/x
  3. Step 3: Cross multiply
    9,151.76x = 13,720.14 × 5,864
  4. Step 4: Simplify right side
    9,151.76x = 80,454,900.96
  5. Step 5: Solve for x
    x = 80,454,900.96/9,151.76
  6. Step 6: Final answer
    x = 8,791.19

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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.