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Finding the Fourth Proportional to 64,121.88, 96,084.39 and 39,124.47

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Solution

The fourth proportional to 64,121.88, 96,084.39 and 39,124.47 is: 58,626.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,121.88 : 96,084.39 = 39,124.47 : x
  2. Step 2: Convert to fraction form
    64,121.88/96,084.39 = 39,124.47/x
  3. Step 3: Cross multiply
    64,121.88x = 96,084.39 × 39,124.47
  4. Step 4: Simplify right side
    64,121.88x = 3,759,250,834.02
  5. Step 5: Solve for x
    x = 3,759,250,834.02/64,121.88
  6. Step 6: Final answer
    x = 58,626.65

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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.