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Finding the Fourth Proportional to 14,815.31, 20,445.41 and 8,101.01

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Solution

The fourth proportional to 14,815.31, 20,445.41 and 8,101.01 is: 11,179.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,815.31 : 20,445.41 = 8,101.01 : x
  2. Step 2: Convert to fraction form
    14,815.31/20,445.41 = 8,101.01/x
  3. Step 3: Cross multiply
    14,815.31x = 20,445.41 × 8,101.01
  4. Step 4: Simplify right side
    14,815.31x = 165,628,542.23
  5. Step 5: Solve for x
    x = 165,628,542.23/14,815.31
  6. Step 6: Final answer
    x = 11,179.56

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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.