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Finding the Fourth Proportional to 91,206.80, 125,855.80 and 52,958.87

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Solution

The fourth proportional to 91,206.80, 125,855.80 and 52,958.87 is: 73,077.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,206.80 : 125,855.80 = 52,958.87 : x
  2. Step 2: Convert to fraction form
    91,206.80/125,855.80 = 52,958.87/x
  3. Step 3: Cross multiply
    91,206.80x = 125,855.80 × 52,958.87
  4. Step 4: Simplify right side
    91,206.80x = 6,665,180,950.95
  5. Step 5: Solve for x
    x = 6,665,180,950.95/91,206.80
  6. Step 6: Final answer
    x = 73,077.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.