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Finding the Fourth Proportional to 23,672.80, 32,667.12 and 14,720.80

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Solution

The fourth proportional to 23,672.80, 32,667.12 and 14,720.80 is: 20,313.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,672.80 : 32,667.12 = 14,720.80 : x
  2. Step 2: Convert to fraction form
    23,672.80/32,667.12 = 14,720.80/x
  3. Step 3: Cross multiply
    23,672.80x = 32,667.12 × 14,720.80
  4. Step 4: Simplify right side
    23,672.80x = 480,886,140.10
  5. Step 5: Solve for x
    x = 480,886,140.10/23,672.80
  6. Step 6: Final answer
    x = 20,313.87

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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.