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Finding the Fourth Proportional to 54,466.80, 81,700.20 and 43,313.10

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Solution

The fourth proportional to 54,466.80, 81,700.20 and 43,313.10 is: 64,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,466.80 : 81,700.20 = 43,313.10 : x
  2. Step 2: Convert to fraction form
    54,466.80/81,700.20 = 43,313.10/x
  3. Step 3: Cross multiply
    54,466.80x = 81,700.20 × 43,313.10
  4. Step 4: Simplify right side
    54,466.80x = 3,538,688,932.62
  5. Step 5: Solve for x
    x = 3,538,688,932.62/54,466.80
  6. Step 6: Final answer
    x = 64,969.65

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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.