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Finding the Fourth Proportional to 14,389.87, 21,584.86 and 7,366.05

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Solution

The fourth proportional to 14,389.87, 21,584.86 and 7,366.05 is: 11,049.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,389.87 : 21,584.86 = 7,366.05 : x
  2. Step 2: Convert to fraction form
    14,389.87/21,584.86 = 7,366.05/x
  3. Step 3: Cross multiply
    14,389.87x = 21,584.86 × 7,366.05
  4. Step 4: Simplify right side
    14,389.87x = 158,995,158.00
  5. Step 5: Solve for x
    x = 158,995,158.00/14,389.87
  6. Step 6: Final answer
    x = 11,049.10

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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.