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Finding the Fourth Proportional to 543,447.60, 815,171.40 and 417,330.60

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Solution

The fourth proportional to 543,447.60, 815,171.40 and 417,330.60 is: 625,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,447.60 : 815,171.40 = 417,330.60 : x
  2. Step 2: Convert to fraction form
    543,447.60/815,171.40 = 417,330.60/x
  3. Step 3: Cross multiply
    543,447.60x = 815,171.40 × 417,330.60
  4. Step 4: Simplify right side
    543,447.60x = 340,195,969,464.84
  5. Step 5: Solve for x
    x = 340,195,969,464.84/543,447.60
  6. Step 6: Final answer
    x = 625,995.90

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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.