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Finding the Fourth Proportional to 64,188.65, 96,370.31 and 36,128.53

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Solution

The fourth proportional to 64,188.65, 96,370.31 and 36,128.53 is: 54,241.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,188.65 : 96,370.31 = 36,128.53 : x
  2. Step 2: Convert to fraction form
    64,188.65/96,370.31 = 36,128.53/x
  3. Step 3: Cross multiply
    64,188.65x = 96,370.31 × 36,128.53
  4. Step 4: Simplify right side
    64,188.65x = 3,481,717,635.94
  5. Step 5: Solve for x
    x = 3,481,717,635.94/64,188.65
  6. Step 6: Final answer
    x = 54,241.95

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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.