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Finding the Fourth Proportional to 13,667.43, 20,501.13 and 10,551.99

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Solution

The fourth proportional to 13,667.43, 20,501.13 and 10,551.99 is: 15,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.43 : 20,501.13 = 10,551.99 : x
  2. Step 2: Convert to fraction form
    13,667.43/20,501.13 = 10,551.99/x
  3. Step 3: Cross multiply
    13,667.43x = 20,501.13 × 10,551.99
  4. Step 4: Simplify right side
    13,667.43x = 216,327,718.75
  5. Step 5: Solve for x
    x = 216,327,718.75/13,667.43
  6. Step 6: Final answer
    x = 15,827.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.