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Finding the Fourth Proportional to 91,818.84, 137,728.88 and 25,266

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Solution

The fourth proportional to 91,818.84, 137,728.88 and 25,266 is: 37,899.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,818.84 : 137,728.88 = 25,266 : x
  2. Step 2: Convert to fraction form
    91,818.84/137,728.88 = 25,266/x
  3. Step 3: Cross multiply
    91,818.84x = 137,728.88 × 25,266
  4. Step 4: Simplify right side
    91,818.84x = 3,479,857,882.08
  5. Step 5: Solve for x
    x = 3,479,857,882.08/91,818.84
  6. Step 6: Final answer
    x = 37,899.17

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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.