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Finding the Fourth Proportional to 21,998.16, 32,978.68 and 14,958.44

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Solution

The fourth proportional to 21,998.16, 32,978.68 and 14,958.44 is: 22,425.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.16 : 32,978.68 = 14,958.44 : x
  2. Step 2: Convert to fraction form
    21,998.16/32,978.68 = 14,958.44/x
  3. Step 3: Cross multiply
    21,998.16x = 32,978.68 × 14,958.44
  4. Step 4: Simplify right side
    21,998.16x = 493,309,606.06
  5. Step 5: Solve for x
    x = 493,309,606.06/21,998.16
  6. Step 6: Final answer
    x = 22,425.04

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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.