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Finding the Fourth Proportional to 19,192.56, 28,792.12 and 8,805.20

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Solution

The fourth proportional to 19,192.56, 28,792.12 and 8,805.20 is: 13,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,192.56 : 28,792.12 = 8,805.20 : x
  2. Step 2: Convert to fraction form
    19,192.56/28,792.12 = 8,805.20/x
  3. Step 3: Cross multiply
    19,192.56x = 28,792.12 × 8,805.20
  4. Step 4: Simplify right side
    19,192.56x = 253,520,375.02
  5. Step 5: Solve for x
    x = 253,520,375.02/19,192.56
  6. Step 6: Final answer
    x = 13,209.30

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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.