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Finding the Fourth Proportional to 218,426.95, 327,640.56 and 60,655.42

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Solution

The fourth proportional to 218,426.95, 327,640.56 and 60,655.42 is: 90,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,426.95 : 327,640.56 = 60,655.42 : x
  2. Step 2: Convert to fraction form
    218,426.95/327,640.56 = 60,655.42/x
  3. Step 3: Cross multiply
    218,426.95x = 327,640.56 × 60,655.42
  4. Step 4: Simplify right side
    218,426.95x = 19,873,173,834.36
  5. Step 5: Solve for x
    x = 19,873,173,834.36/218,426.95
  6. Step 6: Final answer
    x = 90,983.16

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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.