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Finding the Fourth Proportional to 19,393.88, 26,764.38 and 11,011.16

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Solution

The fourth proportional to 19,393.88, 26,764.38 and 11,011.16 is: 15,195.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,393.88 : 26,764.38 = 11,011.16 : x
  2. Step 2: Convert to fraction form
    19,393.88/26,764.38 = 11,011.16/x
  3. Step 3: Cross multiply
    19,393.88x = 26,764.38 × 11,011.16
  4. Step 4: Simplify right side
    19,393.88x = 294,706,870.48
  5. Step 5: Solve for x
    x = 294,706,870.48/19,393.88
  6. Step 6: Final answer
    x = 15,195.87

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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.