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Finding the Fourth Proportional to 181,859.80, 272,660.10 and 81,938.20

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Solution

The fourth proportional to 181,859.80, 272,660.10 and 81,938.20 is: 122,848.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,859.80 : 272,660.10 = 81,938.20 : x
  2. Step 2: Convert to fraction form
    181,859.80/272,660.10 = 81,938.20/x
  3. Step 3: Cross multiply
    181,859.80x = 272,660.10 × 81,938.20
  4. Step 4: Simplify right side
    181,859.80x = 22,341,277,805.82
  5. Step 5: Solve for x
    x = 22,341,277,805.82/181,859.80
  6. Step 6: Final answer
    x = 122,848.91

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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.