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Finding the Fourth Proportional to 543,187.60, 814,781.40 and 188,213.20

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Solution

The fourth proportional to 543,187.60, 814,781.40 and 188,213.20 is: 282,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,187.60 : 814,781.40 = 188,213.20 : x
  2. Step 2: Convert to fraction form
    543,187.60/814,781.40 = 188,213.20/x
  3. Step 3: Cross multiply
    543,187.60x = 814,781.40 × 188,213.20
  4. Step 4: Simplify right side
    543,187.60x = 153,352,614,594.48
  5. Step 5: Solve for x
    x = 153,352,614,594.48/543,187.60
  6. Step 6: Final answer
    x = 282,319.80

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Similar ratio
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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.