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Finding the Fourth Proportional to 172,364.80, 258,441.28 and 67,061.12

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Solution

The fourth proportional to 172,364.80, 258,441.28 and 67,061.12 is: 100,550.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,364.80 : 258,441.28 = 67,061.12 : x
  2. Step 2: Convert to fraction form
    172,364.80/258,441.28 = 67,061.12/x
  3. Step 3: Cross multiply
    172,364.80x = 258,441.28 × 67,061.12
  4. Step 4: Simplify right side
    172,364.80x = 17,331,361,691.03
  5. Step 5: Solve for x
    x = 17,331,361,691.03/172,364.80
  6. Step 6: Final answer
    x = 100,550.47

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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.