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Finding the Fourth Proportional to 72,562.20, 108,843.30 and 54,130.20

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Solution

The fourth proportional to 72,562.20, 108,843.30 and 54,130.20 is: 81,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,562.20 : 108,843.30 = 54,130.20 : x
  2. Step 2: Convert to fraction form
    72,562.20/108,843.30 = 54,130.20/x
  3. Step 3: Cross multiply
    72,562.20x = 108,843.30 × 54,130.20
  4. Step 4: Simplify right side
    72,562.20x = 5,891,709,597.66
  5. Step 5: Solve for x
    x = 5,891,709,597.66/72,562.20
  6. Step 6: Final answer
    x = 81,195.30

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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.