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Finding the Fourth Proportional to 92,911.28, 127,983.12 and 74,956.01

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Solution

The fourth proportional to 92,911.28, 127,983.12 and 74,956.01 is: 103,250.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,911.28 : 127,983.12 = 74,956.01 : x
  2. Step 2: Convert to fraction form
    92,911.28/127,983.12 = 74,956.01/x
  3. Step 3: Cross multiply
    92,911.28x = 127,983.12 × 74,956.01
  4. Step 4: Simplify right side
    92,911.28x = 9,593,104,022.55
  5. Step 5: Solve for x
    x = 9,593,104,022.55/92,911.28
  6. Step 6: Final answer
    x = 103,250.15

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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.