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Finding the Fourth Proportional to 54,005.80, 80,862.90 and 54,005.80

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Solution

The fourth proportional to 54,005.80, 80,862.90 and 54,005.80 is: 80,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,005.80 : 80,862.90 = 54,005.80 : x
  2. Step 2: Convert to fraction form
    54,005.80/80,862.90 = 54,005.80/x
  3. Step 3: Cross multiply
    54,005.80x = 80,862.90 × 54,005.80
  4. Step 4: Simplify right side
    54,005.80x = 4,367,065,604.82
  5. Step 5: Solve for x
    x = 4,367,065,604.82/54,005.80
  6. Step 6: Final answer
    x = 80,862.90

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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.