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Finding the Fourth Proportional to 18,792.33, 28,152.16 and 10,447.05

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Solution

The fourth proportional to 18,792.33, 28,152.16 and 10,447.05 is: 15,650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.33 : 28,152.16 = 10,447.05 : x
  2. Step 2: Convert to fraction form
    18,792.33/28,152.16 = 10,447.05/x
  3. Step 3: Cross multiply
    18,792.33x = 28,152.16 × 10,447.05
  4. Step 4: Simplify right side
    18,792.33x = 294,107,023.40
  5. Step 5: Solve for x
    x = 294,107,023.40/18,792.33
  6. Step 6: Final answer
    x = 15,650.38

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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.