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Finding the Fourth Proportional to 44,371.68, 66,524.64 and 20,970.78

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Solution

The fourth proportional to 44,371.68, 66,524.64 and 20,970.78 is: 31,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,371.68 : 66,524.64 = 20,970.78 : x
  2. Step 2: Convert to fraction form
    44,371.68/66,524.64 = 20,970.78/x
  3. Step 3: Cross multiply
    44,371.68x = 66,524.64 × 20,970.78
  4. Step 4: Simplify right side
    44,371.68x = 1,395,073,590.02
  5. Step 5: Solve for x
    x = 1,395,073,590.02/44,371.68
  6. Step 6: Final answer
    x = 31,440.63

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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.