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Finding the Fourth Proportional to 818,891.92, 1,228,337.88 and 319,906

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Solution

The fourth proportional to 818,891.92, 1,228,337.88 and 319,906 is: 479,859.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,891.92 : 1,228,337.88 = 319,906 : x
  2. Step 2: Convert to fraction form
    818,891.92/1,228,337.88 = 319,906/x
  3. Step 3: Cross multiply
    818,891.92x = 1,228,337.88 × 319,906
  4. Step 4: Simplify right side
    818,891.92x = 392,952,657,839.28
  5. Step 5: Solve for x
    x = 392,952,657,839.28/818,891.92
  6. Step 6: Final answer
    x = 479,859.00

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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.