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Finding the Fourth Proportional to 14,414.75, 19,892.36 and 7,790.75

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Solution

The fourth proportional to 14,414.75, 19,892.36 and 7,790.75 is: 10,751.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,414.75 : 19,892.36 = 7,790.75 : x
  2. Step 2: Convert to fraction form
    14,414.75/19,892.36 = 7,790.75/x
  3. Step 3: Cross multiply
    14,414.75x = 19,892.36 × 7,790.75
  4. Step 4: Simplify right side
    14,414.75x = 154,976,403.67
  5. Step 5: Solve for x
    x = 154,976,403.67/14,414.75
  6. Step 6: Final answer
    x = 10,751.24

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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.