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Finding the Fourth Proportional to 220,586.20, 330,879.30 and 141,854.20

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Solution

The fourth proportional to 220,586.20, 330,879.30 and 141,854.20 is: 212,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,586.20 : 330,879.30 = 141,854.20 : x
  2. Step 2: Convert to fraction form
    220,586.20/330,879.30 = 141,854.20/x
  3. Step 3: Cross multiply
    220,586.20x = 330,879.30 × 141,854.20
  4. Step 4: Simplify right side
    220,586.20x = 46,936,618,398.06
  5. Step 5: Solve for x
    x = 46,936,618,398.06/220,586.20
  6. Step 6: Final answer
    x = 212,781.30

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1.5x scale

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.