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Finding the Fourth Proportional to 436,726.80, 655,082.88 and 196,707.20

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Solution

The fourth proportional to 436,726.80, 655,082.88 and 196,707.20 is: 295,057.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,726.80 : 655,082.88 = 196,707.20 : x
  2. Step 2: Convert to fraction form
    436,726.80/655,082.88 = 196,707.20/x
  3. Step 3: Cross multiply
    436,726.80x = 655,082.88 × 196,707.20
  4. Step 4: Simplify right side
    436,726.80x = 128,859,519,092.74
  5. Step 5: Solve for x
    x = 128,859,519,092.74/436,726.80
  6. Step 6: Final answer
    x = 295,057.50

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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.