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Finding the Fourth Proportional to 18,993.74, 26,200.40 and 11,434.82

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Solution

The fourth proportional to 18,993.74, 26,200.40 and 11,434.82 is: 15,773.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.74 : 26,200.40 = 11,434.82 : x
  2. Step 2: Convert to fraction form
    18,993.74/26,200.40 = 11,434.82/x
  3. Step 3: Cross multiply
    18,993.74x = 26,200.40 × 11,434.82
  4. Step 4: Simplify right side
    18,993.74x = 299,596,857.93
  5. Step 5: Solve for x
    x = 299,596,857.93/18,993.74
  6. Step 6: Final answer
    x = 15,773.45

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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.