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Finding the Fourth Proportional to 41,991.87, 57,948.78 and 23,129

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Solution

The fourth proportional to 41,991.87, 57,948.78 and 23,129 is: 31,918.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,991.87 : 57,948.78 = 23,129 : x
  2. Step 2: Convert to fraction form
    41,991.87/57,948.78 = 23,129/x
  3. Step 3: Cross multiply
    41,991.87x = 57,948.78 × 23,129
  4. Step 4: Simplify right side
    41,991.87x = 1,340,297,332.62
  5. Step 5: Solve for x
    x = 1,340,297,332.62/41,991.87
  6. Step 6: Final answer
    x = 31,918.02

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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.