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Finding the Fourth Proportional to 61,364.40, 91,816.20 and 55,834.80

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Solution

The fourth proportional to 61,364.40, 91,816.20 and 55,834.80 is: 83,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,364.40 : 91,816.20 = 55,834.80 : x
  2. Step 2: Convert to fraction form
    61,364.40/91,816.20 = 55,834.80/x
  3. Step 3: Cross multiply
    61,364.40x = 91,816.20 × 55,834.80
  4. Step 4: Simplify right side
    61,364.40x = 5,126,539,163.76
  5. Step 5: Solve for x
    x = 5,126,539,163.76/61,364.40
  6. Step 6: Final answer
    x = 83,542.56

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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.