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Finding the Fourth Proportional to 18,822.21, 28,248.84 and 9,464.89

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Solution

The fourth proportional to 18,822.21, 28,248.84 and 9,464.89 is: 14,205.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.21 : 28,248.84 = 9,464.89 : x
  2. Step 2: Convert to fraction form
    18,822.21/28,248.84 = 9,464.89/x
  3. Step 3: Cross multiply
    18,822.21x = 28,248.84 × 9,464.89
  4. Step 4: Simplify right side
    18,822.21x = 267,372,163.23
  5. Step 5: Solve for x
    x = 267,372,163.23/18,822.21
  6. Step 6: Final answer
    x = 14,205.14

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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.