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Finding the Fourth Proportional to 9,165.78, 13,717.52 and 5,658.02

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Solution

The fourth proportional to 9,165.78, 13,717.52 and 5,658.02 is: 8,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.78 : 13,717.52 = 5,658.02 : x
  2. Step 2: Convert to fraction form
    9,165.78/13,717.52 = 5,658.02/x
  3. Step 3: Cross multiply
    9,165.78x = 13,717.52 × 5,658.02
  4. Step 4: Simplify right side
    9,165.78x = 77,614,002.51
  5. Step 5: Solve for x
    x = 77,614,002.51/9,165.78
  6. Step 6: Final answer
    x = 8,467.80

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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.