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Finding the Fourth Proportional to 69,721.86, 96,294.51 and 53,996.52

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Solution

The fourth proportional to 69,721.86, 96,294.51 and 53,996.52 is: 74,575.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,721.86 : 96,294.51 = 53,996.52 : x
  2. Step 2: Convert to fraction form
    69,721.86/96,294.51 = 53,996.52/x
  3. Step 3: Cross multiply
    69,721.86x = 96,294.51 × 53,996.52
  4. Step 4: Simplify right side
    69,721.86x = 5,199,568,435.11
  5. Step 5: Solve for x
    x = 5,199,568,435.11/69,721.86
  6. Step 6: Final answer
    x = 74,575.87

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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.