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Finding the Fourth Proportional to 111,841.92, 154,339.56 and 60,855.66

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Solution

The fourth proportional to 111,841.92, 154,339.56 and 60,855.66 is: 83,979.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,841.92 : 154,339.56 = 60,855.66 : x
  2. Step 2: Convert to fraction form
    111,841.92/154,339.56 = 60,855.66/x
  3. Step 3: Cross multiply
    111,841.92x = 154,339.56 × 60,855.66
  4. Step 4: Simplify right side
    111,841.92x = 9,392,435,787.91
  5. Step 5: Solve for x
    x = 9,392,435,787.91/111,841.92
  6. Step 6: Final answer
    x = 83,979.56

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1.5x scale

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.