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Finding the Fourth Proportional to 14,990.54, 20,687.01 and 8,276.04

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Solution

The fourth proportional to 14,990.54, 20,687.01 and 8,276.04 is: 11,420.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.54 : 20,687.01 = 8,276.04 : x
  2. Step 2: Convert to fraction form
    14,990.54/20,687.01 = 8,276.04/x
  3. Step 3: Cross multiply
    14,990.54x = 20,687.01 × 8,276.04
  4. Step 4: Simplify right side
    14,990.54x = 171,206,522.24
  5. Step 5: Solve for x
    x = 171,206,522.24/14,990.54
  6. Step 6: Final answer
    x = 11,420.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.