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Finding the Fourth Proportional to 14,608.17, 20,155.50 and 8,940.87

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Solution

The fourth proportional to 14,608.17, 20,155.50 and 8,940.87 is: 12,336.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,608.17 : 20,155.50 = 8,940.87 : x
  2. Step 2: Convert to fraction form
    14,608.17/20,155.50 = 8,940.87/x
  3. Step 3: Cross multiply
    14,608.17x = 20,155.50 × 8,940.87
  4. Step 4: Simplify right side
    14,608.17x = 180,207,705.29
  5. Step 5: Solve for x
    x = 180,207,705.29/14,608.17
  6. Step 6: Final answer
    x = 12,336.09

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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.