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Finding the Fourth Proportional to 91,224.52, 136,884.12 and 69,031.24

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Solution

The fourth proportional to 91,224.52, 136,884.12 and 69,031.24 is: 103,582.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,224.52 : 136,884.12 = 69,031.24 : x
  2. Step 2: Convert to fraction form
    91,224.52/136,884.12 = 69,031.24/x
  3. Step 3: Cross multiply
    91,224.52x = 136,884.12 × 69,031.24
  4. Step 4: Simplify right side
    91,224.52x = 9,449,280,539.91
  5. Step 5: Solve for x
    x = 9,449,280,539.91/91,224.52
  6. Step 6: Final answer
    x = 103,582.68

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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.