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Finding the Fourth Proportional to 19,195.20, 28,792.80 and 18,101.70

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Solution

The fourth proportional to 19,195.20, 28,792.80 and 18,101.70 is: 27,152.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,195.20 : 28,792.80 = 18,101.70 : x
  2. Step 2: Convert to fraction form
    19,195.20/28,792.80 = 18,101.70/x
  3. Step 3: Cross multiply
    19,195.20x = 28,792.80 × 18,101.70
  4. Step 4: Simplify right side
    19,195.20x = 521,198,627.76
  5. Step 5: Solve for x
    x = 521,198,627.76/19,195.20
  6. Step 6: Final answer
    x = 27,152.55

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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.