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Finding the Fourth Proportional to 543,187.80, 813,906.90 and 453,958.20

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Solution

The fourth proportional to 543,187.80, 813,906.90 and 453,958.20 is: 680,206.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,187.80 : 813,906.90 = 453,958.20 : x
  2. Step 2: Convert to fraction form
    543,187.80/813,906.90 = 453,958.20/x
  3. Step 3: Cross multiply
    543,187.80x = 813,906.90 × 453,958.20
  4. Step 4: Simplify right side
    543,187.80x = 369,479,711,291.58
  5. Step 5: Solve for x
    x = 369,479,711,291.58/543,187.80
  6. Step 6: Final answer
    x = 680,206.20

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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.