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Finding the Fourth Proportional to 587,638.50, 881,707.17 and 321,087.63

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Solution

The fourth proportional to 587,638.50, 881,707.17 and 321,087.63 is: 481,767.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,638.50 : 881,707.17 = 321,087.63 : x
  2. Step 2: Convert to fraction form
    587,638.50/881,707.17 = 321,087.63/x
  3. Step 3: Cross multiply
    587,638.50x = 881,707.17 × 321,087.63
  4. Step 4: Simplify right side
    587,638.50x = 283,105,265,569.31
  5. Step 5: Solve for x
    x = 283,105,265,569.31/587,638.50
  6. Step 6: Final answer
    x = 481,767.73

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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.