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Finding the Fourth Proportional to 181,205.80, 271,679.10 and 81,284.20

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Solution

The fourth proportional to 181,205.80, 271,679.10 and 81,284.20 is: 121,868.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,205.80 : 271,679.10 = 81,284.20 : x
  2. Step 2: Convert to fraction form
    181,205.80/271,679.10 = 81,284.20/x
  3. Step 3: Cross multiply
    181,205.80x = 271,679.10 × 81,284.20
  4. Step 4: Simplify right side
    181,205.80x = 22,083,218,300.22
  5. Step 5: Solve for x
    x = 22,083,218,300.22/181,205.80
  6. Step 6: Final answer
    x = 121,868.16

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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.