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Finding the Fourth Proportional to 78,895.10, 108,876.10 and 43,086.16

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Solution

The fourth proportional to 78,895.10, 108,876.10 and 43,086.16 is: 59,459.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,895.10 : 108,876.10 = 43,086.16 : x
  2. Step 2: Convert to fraction form
    78,895.10/108,876.10 = 43,086.16/x
  3. Step 3: Cross multiply
    78,895.10x = 108,876.10 × 43,086.16
  4. Step 4: Simplify right side
    78,895.10x = 4,691,053,173.94
  5. Step 5: Solve for x
    x = 4,691,053,173.94/78,895.10
  6. Step 6: Final answer
    x = 59,459.38

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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.