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Finding the Fourth Proportional to 192,451.68, 288,677.88 and 74,178.72

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Solution

The fourth proportional to 192,451.68, 288,677.88 and 74,178.72 is: 111,268.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,451.68 : 288,677.88 = 74,178.72 : x
  2. Step 2: Convert to fraction form
    192,451.68/288,677.88 = 74,178.72/x
  3. Step 3: Cross multiply
    192,451.68x = 288,677.88 × 74,178.72
  4. Step 4: Simplify right side
    192,451.68x = 21,413,755,630.71
  5. Step 5: Solve for x
    x = 21,413,755,630.71/192,451.68
  6. Step 6: Final answer
    x = 111,268.22

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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.