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Finding the Fourth Proportional to 60,835.20, 91,447.20 and 43,425.60

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Solution

The fourth proportional to 60,835.20, 91,447.20 and 43,425.60 is: 65,277.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,835.20 : 91,447.20 = 43,425.60 : x
  2. Step 2: Convert to fraction form
    60,835.20/91,447.20 = 43,425.60/x
  3. Step 3: Cross multiply
    60,835.20x = 91,447.20 × 43,425.60
  4. Step 4: Simplify right side
    60,835.20x = 3,971,149,528.32
  5. Step 5: Solve for x
    x = 3,971,149,528.32/60,835.20
  6. Step 6: Final answer
    x = 65,277.17

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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.