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Finding the Fourth Proportional to 361,185.68, 498,439.92 and 217,918.04

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Solution

The fourth proportional to 361,185.68, 498,439.92 and 217,918.04 is: 300,729.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,185.68 : 498,439.92 = 217,918.04 : x
  2. Step 2: Convert to fraction form
    361,185.68/498,439.92 = 217,918.04/x
  3. Step 3: Cross multiply
    361,185.68x = 498,439.92 × 217,918.04
  4. Step 4: Simplify right side
    361,185.68x = 108,619,050,424.16
  5. Step 5: Solve for x
    x = 108,619,050,424.16/361,185.68
  6. Step 6: Final answer
    x = 300,729.12

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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.