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Finding the Fourth Proportional to 91,901.70, 126,844.11 and 56,084.04

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Solution

The fourth proportional to 91,901.70, 126,844.11 and 56,084.04 is: 77,408.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,901.70 : 126,844.11 = 56,084.04 : x
  2. Step 2: Convert to fraction form
    91,901.70/126,844.11 = 56,084.04/x
  3. Step 3: Cross multiply
    91,901.70x = 126,844.11 × 56,084.04
  4. Step 4: Simplify right side
    91,901.70x = 7,113,930,139.00
  5. Step 5: Solve for x
    x = 7,113,930,139.00/91,901.70
  6. Step 6: Final answer
    x = 77,408.04

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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.