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Finding the Fourth Proportional to 123,616.52, 170,594.15 and 69,909.57

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Solution

The fourth proportional to 123,616.52, 170,594.15 and 69,909.57 is: 96,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,616.52 : 170,594.15 = 69,909.57 : x
  2. Step 2: Convert to fraction form
    123,616.52/170,594.15 = 69,909.57/x
  3. Step 3: Cross multiply
    123,616.52x = 170,594.15 × 69,909.57
  4. Step 4: Simplify right side
    123,616.52x = 11,926,163,321.47
  5. Step 5: Solve for x
    x = 11,926,163,321.47/123,616.52
  6. Step 6: Final answer
    x = 96,477.10

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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.