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Finding the Fourth Proportional to 78,199.68, 107,921.28 and 44,664.96

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Solution

The fourth proportional to 78,199.68, 107,921.28 and 44,664.96 is: 61,640.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,199.68 : 107,921.28 = 44,664.96 : x
  2. Step 2: Convert to fraction form
    78,199.68/107,921.28 = 44,664.96/x
  3. Step 3: Cross multiply
    78,199.68x = 107,921.28 × 44,664.96
  4. Step 4: Simplify right side
    78,199.68x = 4,820,299,654.35
  5. Step 5: Solve for x
    x = 4,820,299,654.35/78,199.68
  6. Step 6: Final answer
    x = 61,640.91

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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.