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Finding the Fourth Proportional to 109,425.20, 164,137.80 and 59,658.80

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Solution

The fourth proportional to 109,425.20, 164,137.80 and 59,658.80 is: 89,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,425.20 : 164,137.80 = 59,658.80 : x
  2. Step 2: Convert to fraction form
    109,425.20/164,137.80 = 59,658.80/x
  3. Step 3: Cross multiply
    109,425.20x = 164,137.80 × 59,658.80
  4. Step 4: Simplify right side
    109,425.20x = 9,792,264,182.64
  5. Step 5: Solve for x
    x = 9,792,264,182.64/109,425.20
  6. Step 6: Final answer
    x = 89,488.20

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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.