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Finding the Fourth Proportional to 123,943.52, 171,043.42 and 67,354.90

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Solution

The fourth proportional to 123,943.52, 171,043.42 and 67,354.90 is: 92,950.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,943.52 : 171,043.42 = 67,354.90 : x
  2. Step 2: Convert to fraction form
    123,943.52/171,043.42 = 67,354.90/x
  3. Step 3: Cross multiply
    123,943.52x = 171,043.42 × 67,354.90
  4. Step 4: Simplify right side
    123,943.52x = 11,520,612,449.76
  5. Step 5: Solve for x
    x = 11,520,612,449.76/123,943.52
  6. Step 6: Final answer
    x = 92,950.50

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1.5x scale

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.