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Finding the Fourth Proportional to 295,127.39, 442,641.57 and 81,916.97

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Solution

The fourth proportional to 295,127.39, 442,641.57 and 81,916.97 is: 122,861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,127.39 : 442,641.57 = 81,916.97 : x
  2. Step 2: Convert to fraction form
    295,127.39/442,641.57 = 81,916.97/x
  3. Step 3: Cross multiply
    295,127.39x = 442,641.57 × 81,916.97
  4. Step 4: Simplify right side
    295,127.39x = 36,259,856,210.44
  5. Step 5: Solve for x
    x = 36,259,856,210.44/295,127.39
  6. Step 6: Final answer
    x = 122,861.71

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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.