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Finding the Fourth Proportional to 141,053.91, 211,768.44 and 81,932.01

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Solution

The fourth proportional to 141,053.91, 211,768.44 and 81,932.01 is: 123,006.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,053.91 : 211,768.44 = 81,932.01 : x
  2. Step 2: Convert to fraction form
    141,053.91/211,768.44 = 81,932.01/x
  3. Step 3: Cross multiply
    141,053.91x = 211,768.44 × 81,932.01
  4. Step 4: Simplify right side
    141,053.91x = 17,350,613,943.76
  5. Step 5: Solve for x
    x = 17,350,613,943.76/141,053.91
  6. Step 6: Final answer
    x = 123,006.97

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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.