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Finding the Fourth Proportional to 111,581.92, 168,140.44 and 92,294.56

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Solution

The fourth proportional to 111,581.92, 168,140.44 and 92,294.56 is: 139,076.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,581.92 : 168,140.44 = 92,294.56 : x
  2. Step 2: Convert to fraction form
    111,581.92/168,140.44 = 92,294.56/x
  3. Step 3: Cross multiply
    111,581.92x = 168,140.44 × 92,294.56
  4. Step 4: Simplify right side
    111,581.92x = 15,518,447,928.01
  5. Step 5: Solve for x
    x = 15,518,447,928.01/111,581.92
  6. Step 6: Final answer
    x = 139,076.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.