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Finding the Fourth Proportional to 217,753.92, 300,524.54 and 127,132.16

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Solution

The fourth proportional to 217,753.92, 300,524.54 and 127,132.16 is: 175,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,753.92 : 300,524.54 = 127,132.16 : x
  2. Step 2: Convert to fraction form
    217,753.92/300,524.54 = 127,132.16/x
  3. Step 3: Cross multiply
    217,753.92x = 300,524.54 × 127,132.16
  4. Step 4: Simplify right side
    217,753.92x = 38,206,333,903.21
  5. Step 5: Solve for x
    x = 38,206,333,903.21/217,753.92
  6. Step 6: Final answer
    x = 175,456.47

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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.