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Finding the Fourth Proportional to 58,709.80, 81,022.98 and 33,218.38

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Solution

The fourth proportional to 58,709.80, 81,022.98 and 33,218.38 is: 45,843.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,709.80 : 81,022.98 = 33,218.38 : x
  2. Step 2: Convert to fraction form
    58,709.80/81,022.98 = 33,218.38/x
  3. Step 3: Cross multiply
    58,709.80x = 81,022.98 × 33,218.38
  4. Step 4: Simplify right side
    58,709.80x = 2,691,452,138.37
  5. Step 5: Solve for x
    x = 2,691,452,138.37/58,709.80
  6. Step 6: Final answer
    x = 45,843.32

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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.