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Finding the Fourth Proportional to 79,616.64, 119,266.56 and 73,084.80

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Solution

The fourth proportional to 79,616.64, 119,266.56 and 73,084.80 is: 109,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,616.64 : 119,266.56 = 73,084.80 : x
  2. Step 2: Convert to fraction form
    79,616.64/119,266.56 = 73,084.80/x
  3. Step 3: Cross multiply
    79,616.64x = 119,266.56 × 73,084.80
  4. Step 4: Simplify right side
    79,616.64x = 8,716,572,684.29
  5. Step 5: Solve for x
    x = 8,716,572,684.29/79,616.64
  6. Step 6: Final answer
    x = 109,481.80

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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.