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Finding the Fourth Proportional to 19,453.91, 26,846.91 and 11,900.10

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Solution

The fourth proportional to 19,453.91, 26,846.91 and 11,900.10 is: 16,422.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,453.91 : 26,846.91 = 11,900.10 : x
  2. Step 2: Convert to fraction form
    19,453.91/26,846.91 = 11,900.10/x
  3. Step 3: Cross multiply
    19,453.91x = 26,846.91 × 11,900.10
  4. Step 4: Simplify right side
    19,453.91x = 319,480,913.69
  5. Step 5: Solve for x
    x = 319,480,913.69/19,453.91
  6. Step 6: Final answer
    x = 16,422.46

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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.