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Finding the Fourth Proportional to 18,792.59, 28,191.51 and 7,700.85

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Solution

The fourth proportional to 18,792.59, 28,191.51 and 7,700.85 is: 11,552.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.59 : 28,191.51 = 7,700.85 : x
  2. Step 2: Convert to fraction form
    18,792.59/28,191.51 = 7,700.85/x
  3. Step 3: Cross multiply
    18,792.59x = 28,191.51 × 7,700.85
  4. Step 4: Simplify right side
    18,792.59x = 217,098,589.78
  5. Step 5: Solve for x
    x = 217,098,589.78/18,792.59
  6. Step 6: Final answer
    x = 11,552.35

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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.