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Finding the Fourth Proportional to 79,489.17, 118,974.15 and 58,423.64

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Solution

The fourth proportional to 79,489.17, 118,974.15 and 58,423.64 is: 87,444.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,489.17 : 118,974.15 = 58,423.64 : x
  2. Step 2: Convert to fraction form
    79,489.17/118,974.15 = 58,423.64/x
  3. Step 3: Cross multiply
    79,489.17x = 118,974.15 × 58,423.64
  4. Step 4: Simplify right side
    79,489.17x = 6,950,902,314.04
  5. Step 5: Solve for x
    x = 6,950,902,314.04/79,489.17
  6. Step 6: Final answer
    x = 87,444.65

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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.