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Finding the Fourth Proportional to 663,777.68, 996,405.10 and 343,844.18

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Solution

The fourth proportional to 663,777.68, 996,405.10 and 343,844.18 is: 516,148.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,777.68 : 996,405.10 = 343,844.18 : x
  2. Step 2: Convert to fraction form
    663,777.68/996,405.10 = 343,844.18/x
  3. Step 3: Cross multiply
    663,777.68x = 996,405.10 × 343,844.18
  4. Step 4: Simplify right side
    663,777.68x = 342,608,094,557.32
  5. Step 5: Solve for x
    x = 342,608,094,557.32/663,777.68
  6. Step 6: Final answer
    x = 516,148.86

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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.