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Finding the Fourth Proportional to 218,105.71, 327,158.64 and 68,357.62

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Solution

The fourth proportional to 218,105.71, 327,158.64 and 68,357.62 is: 102,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,105.71 : 327,158.64 = 68,357.62 : x
  2. Step 2: Convert to fraction form
    218,105.71/327,158.64 = 68,357.62/x
  3. Step 3: Cross multiply
    218,105.71x = 327,158.64 × 68,357.62
  4. Step 4: Simplify right side
    218,105.71x = 22,363,784,637.82
  5. Step 5: Solve for x
    x = 22,363,784,637.82/218,105.71
  6. Step 6: Final answer
    x = 102,536.45

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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.