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Finding the Fourth Proportional to 199,391.80, 299,001.30 and 81,023.80

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Solution

The fourth proportional to 199,391.80, 299,001.30 and 81,023.80 is: 121,500.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,391.80 : 299,001.30 = 81,023.80 : x
  2. Step 2: Convert to fraction form
    199,391.80/299,001.30 = 81,023.80/x
  3. Step 3: Cross multiply
    199,391.80x = 299,001.30 × 81,023.80
  4. Step 4: Simplify right side
    199,391.80x = 24,226,221,530.94
  5. Step 5: Solve for x
    x = 24,226,221,530.94/199,391.80
  6. Step 6: Final answer
    x = 121,500.59

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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.