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Finding the Fourth Proportional to 77,704.76, 107,238.79 and 43,711.22

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Solution

The fourth proportional to 77,704.76, 107,238.79 and 43,711.22 is: 60,324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,704.76 : 107,238.79 = 43,711.22 : x
  2. Step 2: Convert to fraction form
    77,704.76/107,238.79 = 43,711.22/x
  3. Step 3: Cross multiply
    77,704.76x = 107,238.79 × 43,711.22
  4. Step 4: Simplify right side
    77,704.76x = 4,687,538,074.13
  5. Step 5: Solve for x
    x = 4,687,538,074.13/77,704.76
  6. Step 6: Final answer
    x = 60,324.98

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1.5x scale

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.