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Finding the Fourth Proportional to 13,725.87, 18,935.41 and 8,060.51

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Solution

The fourth proportional to 13,725.87, 18,935.41 and 8,060.51 is: 11,119.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.87 : 18,935.41 = 8,060.51 : x
  2. Step 2: Convert to fraction form
    13,725.87/18,935.41 = 8,060.51/x
  3. Step 3: Cross multiply
    13,725.87x = 18,935.41 × 8,060.51
  4. Step 4: Simplify right side
    13,725.87x = 152,629,126.63
  5. Step 5: Solve for x
    x = 152,629,126.63/13,725.87
  6. Step 6: Final answer
    x = 11,119.82

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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.