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Finding the Fourth Proportional to 73,189.63, 100,988.40 and 40,924.83

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Solution

The fourth proportional to 73,189.63, 100,988.40 and 40,924.83 is: 56,468.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,189.63 : 100,988.40 = 40,924.83 : x
  2. Step 2: Convert to fraction form
    73,189.63/100,988.40 = 40,924.83/x
  3. Step 3: Cross multiply
    73,189.63x = 100,988.40 × 40,924.83
  4. Step 4: Simplify right side
    73,189.63x = 4,132,933,101.97
  5. Step 5: Solve for x
    x = 4,132,933,101.97/73,189.63
  6. Step 6: Final answer
    x = 56,468.83

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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.