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Finding the Fourth Proportional to 64,878.88, 89,532.88 and 36,584.58

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Solution

The fourth proportional to 64,878.88, 89,532.88 and 36,584.58 is: 50,486.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,878.88 : 89,532.88 = 36,584.58 : x
  2. Step 2: Convert to fraction form
    64,878.88/89,532.88 = 36,584.58/x
  3. Step 3: Cross multiply
    64,878.88x = 89,532.88 × 36,584.58
  4. Step 4: Simplify right side
    64,878.88x = 3,275,522,810.99
  5. Step 5: Solve for x
    x = 3,275,522,810.99/64,878.88
  6. Step 6: Final answer
    x = 50,486.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.