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Finding the Fourth Proportional to 90,791.76, 136,187.21 and 23,323.74

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Solution

The fourth proportional to 90,791.76, 136,187.21 and 23,323.74 is: 34,985.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,791.76 : 136,187.21 = 23,323.74 : x
  2. Step 2: Convert to fraction form
    90,791.76/136,187.21 = 23,323.74/x
  3. Step 3: Cross multiply
    90,791.76x = 136,187.21 × 23,323.74
  4. Step 4: Simplify right side
    90,791.76x = 3,176,394,960.75
  5. Step 5: Solve for x
    x = 3,176,394,960.75/90,791.76
  6. Step 6: Final answer
    x = 34,985.50

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1.5x scale

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.