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Finding the Fourth Proportional to 92,639.11, 127,842.98 and 54,399.11

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Solution

The fourth proportional to 92,639.11, 127,842.98 and 54,399.11 is: 75,071.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,639.11 : 127,842.98 = 54,399.11 : x
  2. Step 2: Convert to fraction form
    92,639.11/127,842.98 = 54,399.11/x
  3. Step 3: Cross multiply
    92,639.11x = 127,842.98 × 54,399.11
  4. Step 4: Simplify right side
    92,639.11x = 6,954,544,331.75
  5. Step 5: Solve for x
    x = 6,954,544,331.75/92,639.11
  6. Step 6: Final answer
    x = 75,071.36

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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.