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Finding the Fourth Proportional to 73,178.68, 100,988.56 and 41,346.90

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Solution

The fourth proportional to 73,178.68, 100,988.56 and 41,346.90 is: 57,059.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,178.68 : 100,988.56 = 41,346.90 : x
  2. Step 2: Convert to fraction form
    73,178.68/100,988.56 = 41,346.90/x
  3. Step 3: Cross multiply
    73,178.68x = 100,988.56 × 41,346.90
  4. Step 4: Simplify right side
    73,178.68x = 4,175,563,891.46
  5. Step 5: Solve for x
    x = 4,175,563,891.46/73,178.68
  6. Step 6: Final answer
    x = 57,059.84

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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.