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Finding the Fourth Proportional to 14,981.69, 20,674.73 and 8,175.73

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Solution

The fourth proportional to 14,981.69, 20,674.73 and 8,175.73 is: 11,282.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,981.69 : 20,674.73 = 8,175.73 : x
  2. Step 2: Convert to fraction form
    14,981.69/20,674.73 = 8,175.73/x
  3. Step 3: Cross multiply
    14,981.69x = 20,674.73 × 8,175.73
  4. Step 4: Simplify right side
    14,981.69x = 169,030,969.42
  5. Step 5: Solve for x
    x = 169,030,969.42/14,981.69
  6. Step 6: Final answer
    x = 11,282.51

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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.