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Finding the Fourth Proportional to 91,751.79, 137,594.66 and 31,763.97

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Solution

The fourth proportional to 91,751.79, 137,594.66 and 31,763.97 is: 47,634.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,751.79 : 137,594.66 = 31,763.97 : x
  2. Step 2: Convert to fraction form
    91,751.79/137,594.66 = 31,763.97/x
  3. Step 3: Cross multiply
    91,751.79x = 137,594.66 × 31,763.97
  4. Step 4: Simplify right side
    91,751.79x = 4,370,552,493.58
  5. Step 5: Solve for x
    x = 4,370,552,493.58/91,751.79
  6. Step 6: Final answer
    x = 47,634.52

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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.