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Finding the Fourth Proportional to 79,868.03, 109,958.72 and 62,842.23

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Solution

The fourth proportional to 79,868.03, 109,958.72 and 62,842.23 is: 86,518.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,868.03 : 109,958.72 = 62,842.23 : x
  2. Step 2: Convert to fraction form
    79,868.03/109,958.72 = 62,842.23/x
  3. Step 3: Cross multiply
    79,868.03x = 109,958.72 × 62,842.23
  4. Step 4: Simplify right side
    79,868.03x = 6,910,050,858.53
  5. Step 5: Solve for x
    x = 6,910,050,858.53/79,868.03
  6. Step 6: Final answer
    x = 86,518.36

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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.