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Finding the Fourth Proportional to 60,839.20, 91,453.20 and 43,429.60

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Solution

The fourth proportional to 60,839.20, 91,453.20 and 43,429.60 is: 65,283.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,839.20 : 91,453.20 = 43,429.60 : x
  2. Step 2: Convert to fraction form
    60,839.20/91,453.20 = 43,429.60/x
  3. Step 3: Cross multiply
    60,839.20x = 91,453.20 × 43,429.60
  4. Step 4: Simplify right side
    60,839.20x = 3,971,775,894.72
  5. Step 5: Solve for x
    x = 3,971,775,894.72/60,839.20
  6. Step 6: Final answer
    x = 65,283.17

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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.