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Finding the Fourth Proportional to 90,361.63, 135,530.88 and 23,806.90

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Solution

The fourth proportional to 90,361.63, 135,530.88 and 23,806.90 is: 35,707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,361.63 : 135,530.88 = 23,806.90 : x
  2. Step 2: Convert to fraction form
    90,361.63/135,530.88 = 23,806.90/x
  3. Step 3: Cross multiply
    90,361.63x = 135,530.88 × 23,806.90
  4. Step 4: Simplify right side
    90,361.63x = 3,226,570,107.07
  5. Step 5: Solve for x
    x = 3,226,570,107.07/90,361.63
  6. Step 6: Final answer
    x = 35,707.30

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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.