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Finding the Fourth Proportional to 56,963.54, 78,608.31 and 31,472.35

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Solution

The fourth proportional to 56,963.54, 78,608.31 and 31,472.35 is: 43,431.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,963.54 : 78,608.31 = 31,472.35 : x
  2. Step 2: Convert to fraction form
    56,963.54/78,608.31 = 31,472.35/x
  3. Step 3: Cross multiply
    56,963.54x = 78,608.31 × 31,472.35
  4. Step 4: Simplify right side
    56,963.54x = 2,473,987,930.69
  5. Step 5: Solve for x
    x = 2,473,987,930.69/56,963.54
  6. Step 6: Final answer
    x = 43,431.08

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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.