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Finding the Fourth Proportional to 54,331.90, 76,116.50 and 54,331.90

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Solution

The fourth proportional to 54,331.90, 76,116.50 and 54,331.90 is: 76,116.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,331.90 : 76,116.50 = 54,331.90 : x
  2. Step 2: Convert to fraction form
    54,331.90/76,116.50 = 54,331.90/x
  3. Step 3: Cross multiply
    54,331.90x = 76,116.50 × 54,331.90
  4. Step 4: Simplify right side
    54,331.90x = 4,135,554,066.35
  5. Step 5: Solve for x
    x = 4,135,554,066.35/54,331.90
  6. Step 6: Final answer
    x = 76,116.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.