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Finding the Fourth Proportional to 14,672.13, 20,263.94 and 9,948.21

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Solution

The fourth proportional to 14,672.13, 20,263.94 and 9,948.21 is: 13,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,672.13 : 20,263.94 = 9,948.21 : x
  2. Step 2: Convert to fraction form
    14,672.13/20,263.94 = 9,948.21/x
  3. Step 3: Cross multiply
    14,672.13x = 20,263.94 × 9,948.21
  4. Step 4: Simplify right side
    14,672.13x = 201,589,930.55
  5. Step 5: Solve for x
    x = 201,589,930.55/14,672.13
  6. Step 6: Final answer
    x = 13,739.65

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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.