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Finding the Fourth Proportional to 18,297.99, 27,425.79 and 8,416.53

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Solution

The fourth proportional to 18,297.99, 27,425.79 and 8,416.53 is: 12,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.99 : 27,425.79 = 8,416.53 : x
  2. Step 2: Convert to fraction form
    18,297.99/27,425.79 = 8,416.53/x
  3. Step 3: Cross multiply
    18,297.99x = 27,425.79 × 8,416.53
  4. Step 4: Simplify right side
    18,297.99x = 230,829,984.31
  5. Step 5: Solve for x
    x = 230,829,984.31/18,297.99
  6. Step 6: Final answer
    x = 12,615.05

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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.