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Finding the Fourth Proportional to 591,381.06, 816,106.20 and 319,448.97

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Solution

The fourth proportional to 591,381.06, 816,106.20 and 319,448.97 is: 440,839.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,381.06 : 816,106.20 = 319,448.97 : x
  2. Step 2: Convert to fraction form
    591,381.06/816,106.20 = 319,448.97/x
  3. Step 3: Cross multiply
    591,381.06x = 816,106.20 × 319,448.97
  4. Step 4: Simplify right side
    591,381.06x = 260,704,285,000.61
  5. Step 5: Solve for x
    x = 260,704,285,000.61/591,381.06
  6. Step 6: Final answer
    x = 440,839.76

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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.