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Finding the Fourth Proportional to 83,768.37, 125,472.11 and 39,328.53

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Solution

The fourth proportional to 83,768.37, 125,472.11 and 39,328.53 is: 58,908.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,768.37 : 125,472.11 = 39,328.53 : x
  2. Step 2: Convert to fraction form
    83,768.37/125,472.11 = 39,328.53/x
  3. Step 3: Cross multiply
    83,768.37x = 125,472.11 × 39,328.53
  4. Step 4: Simplify right side
    83,768.37x = 4,934,633,445.66
  5. Step 5: Solve for x
    x = 4,934,633,445.66/83,768.37
  6. Step 6: Final answer
    x = 58,908.08

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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.