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Finding the Fourth Proportional to 13,644.42, 20,466.63 and 9,756.42

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Solution

The fourth proportional to 13,644.42, 20,466.63 and 9,756.42 is: 14,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.42 : 20,466.63 = 9,756.42 : x
  2. Step 2: Convert to fraction form
    13,644.42/20,466.63 = 9,756.42/x
  3. Step 3: Cross multiply
    13,644.42x = 20,466.63 × 9,756.42
  4. Step 4: Simplify right side
    13,644.42x = 199,681,038.26
  5. Step 5: Solve for x
    x = 199,681,038.26/13,644.42
  6. Step 6: Final answer
    x = 14,634.63

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Similar ratio
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1.5x scale

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.