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Finding the Fourth Proportional to 72,443.34, 108,638.40 and 25,046.28

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Solution

The fourth proportional to 72,443.34, 108,638.40 and 25,046.28 is: 37,560.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,443.34 : 108,638.40 = 25,046.28 : x
  2. Step 2: Convert to fraction form
    72,443.34/108,638.40 = 25,046.28/x
  3. Step 3: Cross multiply
    72,443.34x = 108,638.40 × 25,046.28
  4. Step 4: Simplify right side
    72,443.34x = 2,720,987,785.15
  5. Step 5: Solve for x
    x = 2,720,987,785.15/72,443.34
  6. Step 6: Final answer
    x = 37,560.22

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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.