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Finding the Fourth Proportional to 71,974.03, 99,272.74 and 62,396.79

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Solution

The fourth proportional to 71,974.03, 99,272.74 and 62,396.79 is: 86,062.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,974.03 : 99,272.74 = 62,396.79 : x
  2. Step 2: Convert to fraction form
    71,974.03/99,272.74 = 62,396.79/x
  3. Step 3: Cross multiply
    71,974.03x = 99,272.74 × 62,396.79
  4. Step 4: Simplify right side
    71,974.03x = 6,194,300,154.51
  5. Step 5: Solve for x
    x = 6,194,300,154.51/71,974.03
  6. Step 6: Final answer
    x = 86,062.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.