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Finding the Fourth Proportional to 19,422.78, 26,904.95 and 19,029.12

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Solution

The fourth proportional to 19,422.78, 26,904.95 and 19,029.12 is: 26,359.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,422.78 : 26,904.95 = 19,029.12 : x
  2. Step 2: Convert to fraction form
    19,422.78/26,904.95 = 19,029.12/x
  3. Step 3: Cross multiply
    19,422.78x = 26,904.95 × 19,029.12
  4. Step 4: Simplify right side
    19,422.78x = 511,977,427.00
  5. Step 5: Solve for x
    x = 511,977,427.00/19,422.78
  6. Step 6: Final answer
    x = 26,359.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.