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Finding the Fourth Proportional to 19,651.50, 27,119.31 and 10,698.84

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Solution

The fourth proportional to 19,651.50, 27,119.31 and 10,698.84 is: 14,764.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.50 : 27,119.31 = 10,698.84 : x
  2. Step 2: Convert to fraction form
    19,651.50/27,119.31 = 10,698.84/x
  3. Step 3: Cross multiply
    19,651.50x = 27,119.31 × 10,698.84
  4. Step 4: Simplify right side
    19,651.50x = 290,145,158.60
  5. Step 5: Solve for x
    x = 290,145,158.60/19,651.50
  6. Step 6: Final answer
    x = 14,764.53

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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.