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Finding the Fourth Proportional to 61,304.78, 91,910.52 and 31,703.74

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Solution

The fourth proportional to 61,304.78, 91,910.52 and 31,703.74 is: 47,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,304.78 : 91,910.52 = 31,703.74 : x
  2. Step 2: Convert to fraction form
    61,304.78/91,910.52 = 31,703.74/x
  3. Step 3: Cross multiply
    61,304.78x = 91,910.52 × 31,703.74
  4. Step 4: Simplify right side
    61,304.78x = 2,913,906,999.57
  5. Step 5: Solve for x
    x = 2,913,906,999.57/61,304.78
  6. Step 6: Final answer
    x = 47,531.48

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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.