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Finding the Fourth Proportional to 14,912.01, 20,578.05 and 8,940.15

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Solution

The fourth proportional to 14,912.01, 20,578.05 and 8,940.15 is: 12,337.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,912.01 : 20,578.05 = 8,940.15 : x
  2. Step 2: Convert to fraction form
    14,912.01/20,578.05 = 8,940.15/x
  3. Step 3: Cross multiply
    14,912.01x = 20,578.05 × 8,940.15
  4. Step 4: Simplify right side
    14,912.01x = 183,970,853.71
  5. Step 5: Solve for x
    x = 183,970,853.71/14,912.01
  6. Step 6: Final answer
    x = 12,337.09

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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.