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Finding the Fourth Proportional to 69,761.88, 104,646.45 and 23,018.40

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Solution

The fourth proportional to 69,761.88, 104,646.45 and 23,018.40 is: 34,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,761.88 : 104,646.45 = 23,018.40 : x
  2. Step 2: Convert to fraction form
    69,761.88/104,646.45 = 23,018.40/x
  3. Step 3: Cross multiply
    69,761.88x = 104,646.45 × 23,018.40
  4. Step 4: Simplify right side
    69,761.88x = 2,408,793,844.68
  5. Step 5: Solve for x
    x = 2,408,793,844.68/69,761.88
  6. Step 6: Final answer
    x = 34,528.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.