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Finding the Fourth Proportional to 14,486.60, 21,722.56 and 7,079.96

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Solution

The fourth proportional to 14,486.60, 21,722.56 and 7,079.96 is: 10,616.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.60 : 21,722.56 = 7,079.96 : x
  2. Step 2: Convert to fraction form
    14,486.60/21,722.56 = 7,079.96/x
  3. Step 3: Cross multiply
    14,486.60x = 21,722.56 × 7,079.96
  4. Step 4: Simplify right side
    14,486.60x = 153,794,855.90
  5. Step 5: Solve for x
    x = 153,794,855.90/14,486.60
  6. Step 6: Final answer
    x = 10,616.35

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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.