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Finding the Fourth Proportional to 14,912.01, 20,578.96 and 8,106.48

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Solution

The fourth proportional to 14,912.01, 20,578.96 and 8,106.48 is: 11,187.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,912.01 : 20,578.96 = 8,106.48 : x
  2. Step 2: Convert to fraction form
    14,912.01/20,578.96 = 8,106.48/x
  3. Step 3: Cross multiply
    14,912.01x = 20,578.96 × 8,106.48
  4. Step 4: Simplify right side
    14,912.01x = 166,823,024.61
  5. Step 5: Solve for x
    x = 166,823,024.61/14,912.01
  6. Step 6: Final answer
    x = 11,187.16

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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.