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Finding the Fourth Proportional to 54,901.80, 82,352.70 and 54,318.60

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Solution

The fourth proportional to 54,901.80, 82,352.70 and 54,318.60 is: 81,477.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,901.80 : 82,352.70 = 54,318.60 : x
  2. Step 2: Convert to fraction form
    54,901.80/82,352.70 = 54,318.60/x
  3. Step 3: Cross multiply
    54,901.80x = 82,352.70 × 54,318.60
  4. Step 4: Simplify right side
    54,901.80x = 4,473,283,370.22
  5. Step 5: Solve for x
    x = 4,473,283,370.22/54,901.80
  6. Step 6: Final answer
    x = 81,477.90

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1.5x scale

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.