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Finding the Fourth Proportional to 100,739.56, 151,053.84 and 41,561.76

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Solution

The fourth proportional to 100,739.56, 151,053.84 and 41,561.76 is: 62,319.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,739.56 : 151,053.84 = 41,561.76 : x
  2. Step 2: Convert to fraction form
    100,739.56/151,053.84 = 41,561.76/x
  3. Step 3: Cross multiply
    100,739.56x = 151,053.84 × 41,561.76
  4. Step 4: Simplify right side
    100,739.56x = 6,278,063,445.16
  5. Step 5: Solve for x
    x = 6,278,063,445.16/100,739.56
  6. Step 6: Final answer
    x = 62,319.74

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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.