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Finding the Fourth Proportional to 543,815.70, 815,723.55 and 188,865.60

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Solution

The fourth proportional to 543,815.70, 815,723.55 and 188,865.60 is: 283,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,815.70 : 815,723.55 = 188,865.60 : x
  2. Step 2: Convert to fraction form
    543,815.70/815,723.55 = 188,865.60/x
  3. Step 3: Cross multiply
    543,815.70x = 815,723.55 × 188,865.60
  4. Step 4: Simplify right side
    543,815.70x = 154,062,117,704.88
  5. Step 5: Solve for x
    x = 154,062,117,704.88/543,815.70
  6. Step 6: Final answer
    x = 283,298.40

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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.