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Finding the Fourth Proportional to 217,098.32, 299,593.92 and 121,605.92

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Solution

The fourth proportional to 217,098.32, 299,593.92 and 121,605.92 is: 167,815.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,098.32 : 299,593.92 = 121,605.92 : x
  2. Step 2: Convert to fraction form
    217,098.32/299,593.92 = 121,605.92/x
  3. Step 3: Cross multiply
    217,098.32x = 299,593.92 × 121,605.92
  4. Step 4: Simplify right side
    217,098.32x = 36,432,394,268.01
  5. Step 5: Solve for x
    x = 36,432,394,268.01/217,098.32
  6. Step 6: Final answer
    x = 167,815.18

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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.