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Finding the Fourth Proportional to 403,738.60, 604,951.80 and 336,816.40

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Solution

The fourth proportional to 403,738.60, 604,951.80 and 336,816.40 is: 504,677.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,738.60 : 604,951.80 = 336,816.40 : x
  2. Step 2: Convert to fraction form
    403,738.60/604,951.80 = 336,816.40/x
  3. Step 3: Cross multiply
    403,738.60x = 604,951.80 × 336,816.40
  4. Step 4: Simplify right side
    403,738.60x = 203,757,687,449.52
  5. Step 5: Solve for x
    x = 203,757,687,449.52/403,738.60
  6. Step 6: Final answer
    x = 504,677.25

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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.