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Finding the Fourth Proportional to 75,685.82, 104,445.11 and 43,857.68

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Solution

The fourth proportional to 75,685.82, 104,445.11 and 43,857.68 is: 60,522.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,685.82 : 104,445.11 = 43,857.68 : x
  2. Step 2: Convert to fraction form
    75,685.82/104,445.11 = 43,857.68/x
  3. Step 3: Cross multiply
    75,685.82x = 104,445.11 × 43,857.68
  4. Step 4: Simplify right side
    75,685.82x = 4,580,719,799.36
  5. Step 5: Solve for x
    x = 4,580,719,799.36/75,685.82
  6. Step 6: Final answer
    x = 60,522.83

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1.5x scale

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.