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Finding the Fourth Proportional to 85,691.84, 118,255.98 and 49,373.26

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Solution

The fourth proportional to 85,691.84, 118,255.98 and 49,373.26 is: 68,135.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,691.84 : 118,255.98 = 49,373.26 : x
  2. Step 2: Convert to fraction form
    85,691.84/118,255.98 = 49,373.26/x
  3. Step 3: Cross multiply
    85,691.84x = 118,255.98 × 49,373.26
  4. Step 4: Simplify right side
    85,691.84x = 5,838,683,247.09
  5. Step 5: Solve for x
    x = 5,838,683,247.09/85,691.84
  6. Step 6: Final answer
    x = 68,135.81

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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.