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Finding the Fourth Proportional to 220,868.80, 331,346.40 and 94,508.80

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Solution

The fourth proportional to 220,868.80, 331,346.40 and 94,508.80 is: 141,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,868.80 : 331,346.40 = 94,508.80 : x
  2. Step 2: Convert to fraction form
    220,868.80/331,346.40 = 94,508.80/x
  3. Step 3: Cross multiply
    220,868.80x = 331,346.40 × 94,508.80
  4. Step 4: Simplify right side
    220,868.80x = 31,315,150,648.32
  5. Step 5: Solve for x
    x = 31,315,150,648.32/220,868.80
  6. Step 6: Final answer
    x = 141,781.69

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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.