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Finding the Fourth Proportional to 73,764.72, 110,543.40 and 55,309.68

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Solution

The fourth proportional to 73,764.72, 110,543.40 and 55,309.68 is: 82,886.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,764.72 : 110,543.40 = 55,309.68 : x
  2. Step 2: Convert to fraction form
    73,764.72/110,543.40 = 55,309.68/x
  3. Step 3: Cross multiply
    73,764.72x = 110,543.40 × 55,309.68
  4. Step 4: Simplify right side
    73,764.72x = 6,114,120,080.11
  5. Step 5: Solve for x
    x = 6,114,120,080.11/73,764.72
  6. Step 6: Final answer
    x = 82,886.78

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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.