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Finding the Fourth Proportional to 91,908.60, 137,867.42 and 25,347.25

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Solution

The fourth proportional to 91,908.60, 137,867.42 and 25,347.25 is: 38,022.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,908.60 : 137,867.42 = 25,347.25 : x
  2. Step 2: Convert to fraction form
    91,908.60/137,867.42 = 25,347.25/x
  3. Step 3: Cross multiply
    91,908.60x = 137,867.42 × 25,347.25
  4. Step 4: Simplify right side
    91,908.60x = 3,494,559,961.60
  5. Step 5: Solve for x
    x = 3,494,559,961.60/91,908.60
  6. Step 6: Final answer
    x = 38,022.12

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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.