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Finding the Fourth Proportional to 54,588.90, 81,319.97 and 52,936.90

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Solution

The fourth proportional to 54,588.90, 81,319.97 and 52,936.90 is: 78,859.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,588.90 : 81,319.97 = 52,936.90 : x
  2. Step 2: Convert to fraction form
    54,588.90/81,319.97 = 52,936.90/x
  3. Step 3: Cross multiply
    54,588.90x = 81,319.97 × 52,936.90
  4. Step 4: Simplify right side
    54,588.90x = 4,304,827,119.89
  5. Step 5: Solve for x
    x = 4,304,827,119.89/54,588.90
  6. Step 6: Final answer
    x = 78,859.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.