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Finding the Fourth Proportional to 571,818.78, 789,115.92 and 313,696.24

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Solution

The fourth proportional to 571,818.78, 789,115.92 and 313,696.24 is: 432,904.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,818.78 : 789,115.92 = 313,696.24 : x
  2. Step 2: Convert to fraction form
    571,818.78/789,115.92 = 313,696.24/x
  3. Step 3: Cross multiply
    571,818.78x = 789,115.92 × 313,696.24
  4. Step 4: Simplify right side
    571,818.78x = 247,542,699,000.93
  5. Step 5: Solve for x
    x = 247,542,699,000.93/571,818.78
  6. Step 6: Final answer
    x = 432,904.11

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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.