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Finding the Fourth Proportional to 14,984.71, 20,672.49 and 9,012.85

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Solution

The fourth proportional to 14,984.71, 20,672.49 and 9,012.85 is: 12,433.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,984.71 : 20,672.49 = 9,012.85 : x
  2. Step 2: Convert to fraction form
    14,984.71/20,672.49 = 9,012.85/x
  3. Step 3: Cross multiply
    14,984.71x = 20,672.49 × 9,012.85
  4. Step 4: Simplify right side
    14,984.71x = 186,318,051.50
  5. Step 5: Solve for x
    x = 186,318,051.50/14,984.71
  6. Step 6: Final answer
    x = 12,433.88

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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.