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Finding the Fourth Proportional to 90,634.70, 135,952.05 and 90,634.70

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Solution

The fourth proportional to 90,634.70, 135,952.05 and 90,634.70 is: 135,952.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,634.70 : 135,952.05 = 90,634.70 : x
  2. Step 2: Convert to fraction form
    90,634.70/135,952.05 = 90,634.70/x
  3. Step 3: Cross multiply
    90,634.70x = 135,952.05 × 90,634.70
  4. Step 4: Simplify right side
    90,634.70x = 12,321,973,266.14
  5. Step 5: Solve for x
    x = 12,321,973,266.14/90,634.70
  6. Step 6: Final answer
    x = 135,952.05

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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.