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Finding the Fourth Proportional to 19,614.80, 29,431.80 and 14,933.20

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Solution

The fourth proportional to 19,614.80, 29,431.80 and 14,933.20 is: 22,407.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,614.80 : 29,431.80 = 14,933.20 : x
  2. Step 2: Convert to fraction form
    19,614.80/29,431.80 = 14,933.20/x
  3. Step 3: Cross multiply
    19,614.80x = 29,431.80 × 14,933.20
  4. Step 4: Simplify right side
    19,614.80x = 439,510,955.76
  5. Step 5: Solve for x
    x = 439,510,955.76/19,614.80
  6. Step 6: Final answer
    x = 22,407.11

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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.