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Finding the Fourth Proportional to 91,964.68, 137,674.86 and 56,791.24

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Solution

The fourth proportional to 91,964.68, 137,674.86 and 56,791.24 is: 85,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,964.68 : 137,674.86 = 56,791.24 : x
  2. Step 2: Convert to fraction form
    91,964.68/137,674.86 = 56,791.24/x
  3. Step 3: Cross multiply
    91,964.68x = 137,674.86 × 56,791.24
  4. Step 4: Simplify right side
    91,964.68x = 7,818,726,016.23
  5. Step 5: Solve for x
    x = 7,818,726,016.23/91,964.68
  6. Step 6: Final answer
    x = 85,018.79

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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.