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Finding the Third Proportional to 54,421.88 and 84,060

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Solution

The third proportional to 54,421.88 and 84,060 is: 129,839.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,421.88 : 84,060 = 84,060 : x
  2. Step 2: Convert to fraction form
    54,421.88/84,060 = 84,060/x
  3. Step 3: Cross multiply
    54,421.88x = 84,060 × 84,060
  4. Step 4: Simplify right side
    54,421.88x = 7,066,083,600
  5. Step 5: Solve for x
    x = 7,066,083,600/54,421.88
  6. Step 6: Final answer
    x = 129,839.03

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.