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Finding the Fourth Proportional to 14,642.75, 21,986.00 and 14,424.05

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Solution

The fourth proportional to 14,642.75, 21,986.00 and 14,424.05 is: 21,657.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,642.75 : 21,986.00 = 14,424.05 : x
  2. Step 2: Convert to fraction form
    14,642.75/21,986.00 = 14,424.05/x
  3. Step 3: Cross multiply
    14,642.75x = 21,986.00 × 14,424.05
  4. Step 4: Simplify right side
    14,642.75x = 317,127,254.33
  5. Step 5: Solve for x
    x = 317,127,254.33/14,642.75
  6. Step 6: Final answer
    x = 21,657.63

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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.