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Finding the Fourth Proportional to 73,928.60, 110,965.80 and 36,530.90

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Solution

The fourth proportional to 73,928.60, 110,965.80 and 36,530.90 is: 54,832.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,928.60 : 110,965.80 = 36,530.90 : x
  2. Step 2: Convert to fraction form
    73,928.60/110,965.80 = 36,530.90/x
  3. Step 3: Cross multiply
    73,928.60x = 110,965.80 × 36,530.90
  4. Step 4: Simplify right side
    73,928.60x = 4,053,680,543.22
  5. Step 5: Solve for x
    x = 4,053,680,543.22/73,928.60
  6. Step 6: Final answer
    x = 54,832.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.