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Finding the Fourth Proportional to 14,510.70, 21,722.85 and 8,664.30

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Solution

The fourth proportional to 14,510.70, 21,722.85 and 8,664.30 is: 12,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,510.70 : 21,722.85 = 8,664.30 : x
  2. Step 2: Convert to fraction form
    14,510.70/21,722.85 = 8,664.30/x
  3. Step 3: Cross multiply
    14,510.70x = 21,722.85 × 8,664.30
  4. Step 4: Simplify right side
    14,510.70x = 188,213,289.26
  5. Step 5: Solve for x
    x = 188,213,289.26/14,510.70
  6. Step 6: Final answer
    x = 12,970.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.