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Finding the Fourth Proportional to 41,978.60, 57,930.90 and 23,117.48

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Solution

The fourth proportional to 41,978.60, 57,930.90 and 23,117.48 is: 31,902.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,978.60 : 57,930.90 = 23,117.48 : x
  2. Step 2: Convert to fraction form
    41,978.60/57,930.90 = 23,117.48/x
  3. Step 3: Cross multiply
    41,978.60x = 57,930.90 × 23,117.48
  4. Step 4: Simplify right side
    41,978.60x = 1,339,216,422.13
  5. Step 5: Solve for x
    x = 1,339,216,422.13/41,978.60
  6. Step 6: Final answer
    x = 31,902.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.