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Finding the Fourth Proportional to 67,432.78, 101,154 and 25,879.78

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Solution

The fourth proportional to 67,432.78, 101,154 and 25,879.78 is: 38,821.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,432.78 : 101,154 = 25,879.78 : x
  2. Step 2: Convert to fraction form
    67,432.78/101,154 = 25,879.78/x
  3. Step 3: Cross multiply
    67,432.78x = 101,154 × 25,879.78
  4. Step 4: Simplify right side
    67,432.78x = 2,617,843,266.12
  5. Step 5: Solve for x
    x = 2,617,843,266.12/67,432.78
  6. Step 6: Final answer
    x = 38,821.52

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1.5x scale

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.