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Finding the Fourth Proportional to 21,303.75, 29,399.33 and 12,226.70

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Solution

The fourth proportional to 21,303.75, 29,399.33 and 12,226.70 is: 16,872.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.75 : 29,399.33 = 12,226.70 : x
  2. Step 2: Convert to fraction form
    21,303.75/29,399.33 = 12,226.70/x
  3. Step 3: Cross multiply
    21,303.75x = 29,399.33 × 12,226.70
  4. Step 4: Simplify right side
    21,303.75x = 359,456,579.98
  5. Step 5: Solve for x
    x = 359,456,579.98/21,303.75
  6. Step 6: Final answer
    x = 16,872.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.