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Finding the Fourth Proportional to 68,781.59, 94,878.28 and 43,247.49

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Solution

The fourth proportional to 68,781.59, 94,878.28 and 43,247.49 is: 59,656.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,781.59 : 94,878.28 = 43,247.49 : x
  2. Step 2: Convert to fraction form
    68,781.59/94,878.28 = 43,247.49/x
  3. Step 3: Cross multiply
    68,781.59x = 94,878.28 × 43,247.49
  4. Step 4: Simplify right side
    68,781.59x = 4,103,247,465.52
  5. Step 5: Solve for x
    x = 4,103,247,465.52/68,781.59
  6. Step 6: Final answer
    x = 59,656.19

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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.