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Finding the Fourth Proportional to 14,050.65, 21,069.82 and 5,279.41

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Solution

The fourth proportional to 14,050.65, 21,069.82 and 5,279.41 is: 7,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,050.65 : 21,069.82 = 5,279.41 : x
  2. Step 2: Convert to fraction form
    14,050.65/21,069.82 = 5,279.41/x
  3. Step 3: Cross multiply
    14,050.65x = 21,069.82 × 5,279.41
  4. Step 4: Simplify right side
    14,050.65x = 111,236,251.34
  5. Step 5: Solve for x
    x = 111,236,251.34/14,050.65
  6. Step 6: Final answer
    x = 7,916.80

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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.