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Finding the Fourth Proportional to 543,811.60, 815,717.40 and 403,843.60

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Solution

The fourth proportional to 543,811.60, 815,717.40 and 403,843.60 is: 605,765.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,811.60 : 815,717.40 = 403,843.60 : x
  2. Step 2: Convert to fraction form
    543,811.60/815,717.40 = 403,843.60/x
  3. Step 3: Cross multiply
    543,811.60x = 815,717.40 × 403,843.60
  4. Step 4: Simplify right side
    543,811.60x = 329,422,251,398.64
  5. Step 5: Solve for x
    x = 329,422,251,398.64/543,811.60
  6. Step 6: Final answer
    x = 605,765.40

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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.