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Finding the Fourth Proportional to 14,987.66, 20,682.92 and 8,273.24

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Solution

The fourth proportional to 14,987.66, 20,682.92 and 8,273.24 is: 11,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.66 : 20,682.92 = 8,273.24 : x
  2. Step 2: Convert to fraction form
    14,987.66/20,682.92 = 8,273.24/x
  3. Step 3: Cross multiply
    14,987.66x = 20,682.92 × 8,273.24
  4. Step 4: Simplify right side
    14,987.66x = 171,114,616.28
  5. Step 5: Solve for x
    x = 171,114,616.28/14,987.66
  6. Step 6: Final answer
    x = 11,417.04

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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.