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Finding the Fourth Proportional to 90,415.62, 135,607.95 and 23,856.44

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Solution

The fourth proportional to 90,415.62, 135,607.95 and 23,856.44 is: 35,780.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,415.62 : 135,607.95 = 23,856.44 : x
  2. Step 2: Convert to fraction form
    90,415.62/135,607.95 = 23,856.44/x
  3. Step 3: Cross multiply
    90,415.62x = 135,607.95 × 23,856.44
  4. Step 4: Simplify right side
    90,415.62x = 3,235,122,244.66
  5. Step 5: Solve for x
    x = 3,235,122,244.66/90,415.62
  6. Step 6: Final answer
    x = 35,780.57

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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.