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Finding the Fourth Proportional to 19,168.72, 28,767.05 and 9,816.56

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Solution

The fourth proportional to 19,168.72, 28,767.05 and 9,816.56 is: 14,731.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.72 : 28,767.05 = 9,816.56 : x
  2. Step 2: Convert to fraction form
    19,168.72/28,767.05 = 9,816.56/x
  3. Step 3: Cross multiply
    19,168.72x = 28,767.05 × 9,816.56
  4. Step 4: Simplify right side
    19,168.72x = 282,393,424.12
  5. Step 5: Solve for x
    x = 282,393,424.12/19,168.72
  6. Step 6: Final answer
    x = 14,731.99

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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.