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Finding the Fourth Proportional to 91,911.88, 137,674.08 and 42,033.97

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Solution

The fourth proportional to 91,911.88, 137,674.08 and 42,033.97 is: 62,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,911.88 : 137,674.08 = 42,033.97 : x
  2. Step 2: Convert to fraction form
    91,911.88/137,674.08 = 42,033.97/x
  3. Step 3: Cross multiply
    91,911.88x = 137,674.08 × 42,033.97
  4. Step 4: Simplify right side
    91,911.88x = 5,786,988,320.59
  5. Step 5: Solve for x
    x = 5,786,988,320.59/91,911.88
  6. Step 6: Final answer
    x = 62,962.35

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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.