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Finding the Fourth Proportional to 92,261.87, 127,320.81 and 51,988.61

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Solution

The fourth proportional to 92,261.87, 127,320.81 and 51,988.61 is: 71,743.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,261.87 : 127,320.81 = 51,988.61 : x
  2. Step 2: Convert to fraction form
    92,261.87/127,320.81 = 51,988.61/x
  3. Step 3: Cross multiply
    92,261.87x = 127,320.81 × 51,988.61
  4. Step 4: Simplify right side
    92,261.87x = 6,619,231,935.97
  5. Step 5: Solve for x
    x = 6,619,231,935.97/92,261.87
  6. Step 6: Final answer
    x = 71,743.96

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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.