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Finding the Fourth Proportional to 79,689.68, 119,422.64 and 62,976.24

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Solution

The fourth proportional to 79,689.68, 119,422.64 and 62,976.24 is: 94,375.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,689.68 : 119,422.64 = 62,976.24 : x
  2. Step 2: Convert to fraction form
    79,689.68/119,422.64 = 62,976.24/x
  3. Step 3: Cross multiply
    79,689.68x = 119,422.64 × 62,976.24
  4. Step 4: Simplify right side
    79,689.68x = 7,520,788,838.07
  5. Step 5: Solve for x
    x = 7,520,788,838.07/79,689.68
  6. Step 6: Final answer
    x = 94,375.94

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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.