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Finding the Fourth Proportional to 19,369.80, 26,725.14 and 10,986.12

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Solution

The fourth proportional to 19,369.80, 26,725.14 and 10,986.12 is: 15,157.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.80 : 26,725.14 = 10,986.12 : x
  2. Step 2: Convert to fraction form
    19,369.80/26,725.14 = 10,986.12/x
  3. Step 3: Cross multiply
    19,369.80x = 26,725.14 × 10,986.12
  4. Step 4: Simplify right side
    19,369.80x = 293,605,595.06
  5. Step 5: Solve for x
    x = 293,605,595.06/19,369.80
  6. Step 6: Final answer
    x = 15,157.91

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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.