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Finding the Fourth Proportional to 403,364.20, 605,046.30 and 268,061.80

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Solution

The fourth proportional to 403,364.20, 605,046.30 and 268,061.80 is: 402,092.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,364.20 : 605,046.30 = 268,061.80 : x
  2. Step 2: Convert to fraction form
    403,364.20/605,046.30 = 268,061.80/x
  3. Step 3: Cross multiply
    403,364.20x = 605,046.30 × 268,061.80
  4. Step 4: Simplify right side
    403,364.20x = 162,189,800,261.34
  5. Step 5: Solve for x
    x = 162,189,800,261.34/403,364.20
  6. Step 6: Final answer
    x = 402,092.70

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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.