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Finding the Fourth Proportional to 478,643.38, 660,517.92 and 263,777.92

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Solution

The fourth proportional to 478,643.38, 660,517.92 and 263,777.92 is: 364,008.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,643.38 : 660,517.92 = 263,777.92 : x
  2. Step 2: Convert to fraction form
    478,643.38/660,517.92 = 263,777.92/x
  3. Step 3: Cross multiply
    478,643.38x = 660,517.92 × 263,777.92
  4. Step 4: Simplify right side
    478,643.38x = 174,230,043,060.33
  5. Step 5: Solve for x
    x = 174,230,043,060.33/478,643.38
  6. Step 6: Final answer
    x = 364,008.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.