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Finding the Fourth Proportional to 67,616.80, 100,984.04 and 57,513.87

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Solution

The fourth proportional to 67,616.80, 100,984.04 and 57,513.87 is: 85,895.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,616.80 : 100,984.04 = 57,513.87 : x
  2. Step 2: Convert to fraction form
    67,616.80/100,984.04 = 57,513.87/x
  3. Step 3: Cross multiply
    67,616.80x = 100,984.04 × 57,513.87
  4. Step 4: Simplify right side
    67,616.80x = 5,807,982,948.63
  5. Step 5: Solve for x
    x = 5,807,982,948.63/67,616.80
  6. Step 6: Final answer
    x = 85,895.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.