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Finding the Fourth Proportional to 14,682.39, 20,261.80 and 7,968.13

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Solution

The fourth proportional to 14,682.39, 20,261.80 and 7,968.13 is: 10,996.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,682.39 : 20,261.80 = 7,968.13 : x
  2. Step 2: Convert to fraction form
    14,682.39/20,261.80 = 7,968.13/x
  3. Step 3: Cross multiply
    14,682.39x = 20,261.80 × 7,968.13
  4. Step 4: Simplify right side
    14,682.39x = 161,448,656.43
  5. Step 5: Solve for x
    x = 161,448,656.43/14,682.39
  6. Step 6: Final answer
    x = 10,996.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.