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Finding the Fourth Proportional to 14,998.28, 20,700.51 and 8,629.16

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Solution

The fourth proportional to 14,998.28, 20,700.51 and 8,629.16 is: 11,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,998.28 : 20,700.51 = 8,629.16 : x
  2. Step 2: Convert to fraction form
    14,998.28/20,700.51 = 8,629.16/x
  3. Step 3: Cross multiply
    14,998.28x = 20,700.51 × 8,629.16
  4. Step 4: Simplify right side
    14,998.28x = 178,627,909.37
  5. Step 5: Solve for x
    x = 178,627,909.37/14,998.28
  6. Step 6: Final answer
    x = 11,909.90

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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.