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Finding the Fourth Proportional to 14,473.28, 21,713.20 and 5,239.28

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Solution

The fourth proportional to 14,473.28, 21,713.20 and 5,239.28 is: 7,860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,473.28 : 21,713.20 = 5,239.28 : x
  2. Step 2: Convert to fraction form
    14,473.28/21,713.20 = 5,239.28/x
  3. Step 3: Cross multiply
    14,473.28x = 21,713.20 × 5,239.28
  4. Step 4: Simplify right side
    14,473.28x = 113,761,534.50
  5. Step 5: Solve for x
    x = 113,761,534.50/14,473.28
  6. Step 6: Final answer
    x = 7,860.11

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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.