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Finding the Fourth Proportional to 91,146.80, 136,768.21 and 46,773.55

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Solution

The fourth proportional to 91,146.80, 136,768.21 and 46,773.55 is: 70,184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,146.80 : 136,768.21 = 46,773.55 : x
  2. Step 2: Convert to fraction form
    91,146.80/136,768.21 = 46,773.55/x
  3. Step 3: Cross multiply
    91,146.80x = 136,768.21 × 46,773.55
  4. Step 4: Simplify right side
    91,146.80x = 6,397,135,352.48
  5. Step 5: Solve for x
    x = 6,397,135,352.48/91,146.80
  6. Step 6: Final answer
    x = 70,184.97

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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.