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Finding the Fourth Proportional to 403,864.40, 605,796.60 and 347,767.86

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Solution

The fourth proportional to 403,864.40, 605,796.60 and 347,767.86 is: 521,651.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,864.40 : 605,796.60 = 347,767.86 : x
  2. Step 2: Convert to fraction form
    403,864.40/605,796.60 = 347,767.86/x
  3. Step 3: Cross multiply
    403,864.40x = 605,796.60 × 347,767.86
  4. Step 4: Simplify right side
    403,864.40x = 210,676,587,177.28
  5. Step 5: Solve for x
    x = 210,676,587,177.28/403,864.40
  6. Step 6: Final answer
    x = 521,651.79

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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.