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Finding the Fourth Proportional to 91,808.80, 137,713.82 and 25,255.96

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Solution

The fourth proportional to 91,808.80, 137,713.82 and 25,255.96 is: 37,884.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808.80 : 137,713.82 = 25,255.96 : x
  2. Step 2: Convert to fraction form
    91,808.80/137,713.82 = 25,255.96/x
  3. Step 3: Cross multiply
    91,808.80x = 137,713.82 × 25,255.96
  4. Step 4: Simplify right side
    91,808.80x = 3,478,094,729.37
  5. Step 5: Solve for x
    x = 3,478,094,729.37/91,808.80
  6. Step 6: Final answer
    x = 37,884.11

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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.