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Finding the Fourth Proportional to 14,486.99, 21,738.17 and 5,721.98

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Solution

The fourth proportional to 14,486.99, 21,738.17 and 5,721.98 is: 8,586.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.99 : 21,738.17 = 5,721.98 : x
  2. Step 2: Convert to fraction form
    14,486.99/21,738.17 = 5,721.98/x
  3. Step 3: Cross multiply
    14,486.99x = 21,738.17 × 5,721.98
  4. Step 4: Simplify right side
    14,486.99x = 124,385,279.59
  5. Step 5: Solve for x
    x = 124,385,279.59/14,486.99
  6. Step 6: Final answer
    x = 8,586.00

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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.