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Finding the Fourth Proportional to 14,812.40, 22,213.20 and 7,414.40

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Solution

The fourth proportional to 14,812.40, 22,213.20 and 7,414.40 is: 11,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,812.40 : 22,213.20 = 7,414.40 : x
  2. Step 2: Convert to fraction form
    14,812.40/22,213.20 = 7,414.40/x
  3. Step 3: Cross multiply
    14,812.40x = 22,213.20 × 7,414.40
  4. Step 4: Simplify right side
    14,812.40x = 164,697,550.08
  5. Step 5: Solve for x
    x = 164,697,550.08/14,812.40
  6. Step 6: Final answer
    x = 11,118.90

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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.