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Finding the Fourth Proportional to 58,998.27, 81,338 and 57,163.71

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Solution

The fourth proportional to 58,998.27, 81,338 and 57,163.71 is: 78,808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,998.27 : 81,338 = 57,163.71 : x
  2. Step 2: Convert to fraction form
    58,998.27/81,338 = 57,163.71/x
  3. Step 3: Cross multiply
    58,998.27x = 81,338 × 57,163.71
  4. Step 4: Simplify right side
    58,998.27x = 4,649,581,843.98
  5. Step 5: Solve for x
    x = 4,649,581,843.98/58,998.27
  6. Step 6: Final answer
    x = 78,808.78

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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.