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Finding the Fourth Proportional to 99,245.75, 148,868.75 and 27,199.28

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Solution

The fourth proportional to 99,245.75, 148,868.75 and 27,199.28 is: 40,798.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,245.75 : 148,868.75 = 27,199.28 : x
  2. Step 2: Convert to fraction form
    99,245.75/148,868.75 = 27,199.28/x
  3. Step 3: Cross multiply
    99,245.75x = 148,868.75 × 27,199.28
  4. Step 4: Simplify right side
    99,245.75x = 4,049,121,934.16
  5. Step 5: Solve for x
    x = 4,049,121,934.16/99,245.75
  6. Step 6: Final answer
    x = 40,798.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.