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Finding the Fourth Proportional to 71,062.70, 99,672.10 and 71,062.70

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Solution

The fourth proportional to 71,062.70, 99,672.10 and 71,062.70 is: 99,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,062.70 : 99,672.10 = 71,062.70 : x
  2. Step 2: Convert to fraction form
    71,062.70/99,672.10 = 71,062.70/x
  3. Step 3: Cross multiply
    71,062.70x = 99,672.10 × 71,062.70
  4. Step 4: Simplify right side
    71,062.70x = 7,082,968,540.67
  5. Step 5: Solve for x
    x = 7,082,968,540.67/71,062.70
  6. Step 6: Final answer
    x = 99,672.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.