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Finding the Fourth Proportional to 91,886.78, 137,812.77 and 25,310.30

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Solution

The fourth proportional to 91,886.78, 137,812.77 and 25,310.30 is: 37,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,886.78 : 137,812.77 = 25,310.30 : x
  2. Step 2: Convert to fraction form
    91,886.78/137,812.77 = 25,310.30/x
  3. Step 3: Cross multiply
    91,886.78x = 137,812.77 × 25,310.30
  4. Step 4: Simplify right side
    91,886.78x = 3,488,082,552.53
  5. Step 5: Solve for x
    x = 3,488,082,552.53/91,886.78
  6. Step 6: Final answer
    x = 37,960.66

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1.5x scale

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.