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Finding the Fourth Proportional to 111,491.92, 168,005.02 and 92,204.20

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Solution

The fourth proportional to 111,491.92, 168,005.02 and 92,204.20 is: 138,940.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,491.92 : 168,005.02 = 92,204.20 : x
  2. Step 2: Convert to fraction form
    111,491.92/168,005.02 = 92,204.20/x
  3. Step 3: Cross multiply
    111,491.92x = 168,005.02 × 92,204.20
  4. Step 4: Simplify right side
    111,491.92x = 15,490,768,465.08
  5. Step 5: Solve for x
    x = 15,490,768,465.08/111,491.92
  6. Step 6: Final answer
    x = 138,940.73

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1.5x scale

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.