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Finding the Fourth Proportional to 14,675.87, 20,252.48 and 7,961.51

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Solution

The fourth proportional to 14,675.87, 20,252.48 and 7,961.51 is: 10,986.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,675.87 : 20,252.48 = 7,961.51 : x
  2. Step 2: Convert to fraction form
    14,675.87/20,252.48 = 7,961.51/x
  3. Step 3: Cross multiply
    14,675.87x = 20,252.48 × 7,961.51
  4. Step 4: Simplify right side
    14,675.87x = 161,240,180.97
  5. Step 5: Solve for x
    x = 161,240,180.97/14,675.87
  6. Step 6: Final answer
    x = 10,986.76

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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.