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Finding the Fourth Proportional to 19,455.84, 26,850.06 and 11,899.80

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Solution

The fourth proportional to 19,455.84, 26,850.06 and 11,899.80 is: 16,422.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,455.84 : 26,850.06 = 11,899.80 : x
  2. Step 2: Convert to fraction form
    19,455.84/26,850.06 = 11,899.80/x
  3. Step 3: Cross multiply
    19,455.84x = 26,850.06 × 11,899.80
  4. Step 4: Simplify right side
    19,455.84x = 319,510,343.99
  5. Step 5: Solve for x
    x = 319,510,343.99/19,455.84
  6. Step 6: Final answer
    x = 16,422.34

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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.