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Finding the Fourth Proportional to 14,351.64, 19,811.51 and 8,382.34

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Solution

The fourth proportional to 14,351.64, 19,811.51 and 8,382.34 is: 11,571.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,351.64 : 19,811.51 = 8,382.34 : x
  2. Step 2: Convert to fraction form
    14,351.64/19,811.51 = 8,382.34/x
  3. Step 3: Cross multiply
    14,351.64x = 19,811.51 × 8,382.34
  4. Step 4: Simplify right side
    14,351.64x = 166,066,812.73
  5. Step 5: Solve for x
    x = 166,066,812.73/14,351.64
  6. Step 6: Final answer
    x = 11,571.28

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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.