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Finding the Fourth Proportional to 67,876.46, 101,679.36 and 53,015.80

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Solution

The fourth proportional to 67,876.46, 101,679.36 and 53,015.80 is: 79,418.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,876.46 : 101,679.36 = 53,015.80 : x
  2. Step 2: Convert to fraction form
    67,876.46/101,679.36 = 53,015.80/x
  3. Step 3: Cross multiply
    67,876.46x = 101,679.36 × 53,015.80
  4. Step 4: Simplify right side
    67,876.46x = 5,390,612,613.89
  5. Step 5: Solve for x
    x = 5,390,612,613.89/67,876.46
  6. Step 6: Final answer
    x = 79,418.00

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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.