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Finding the Fourth Proportional to 111,843.84, 154,349.44 and 71,591.68

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Solution

The fourth proportional to 111,843.84, 154,349.44 and 71,591.68 is: 98,799.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,843.84 : 154,349.44 = 71,591.68 : x
  2. Step 2: Convert to fraction form
    111,843.84/154,349.44 = 71,591.68/x
  3. Step 3: Cross multiply
    111,843.84x = 154,349.44 × 71,591.68
  4. Step 4: Simplify right side
    111,843.84x = 11,050,135,716.66
  5. Step 5: Solve for x
    x = 11,050,135,716.66/111,843.84
  6. Step 6: Final answer
    x = 98,799.68

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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.