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Finding the Fourth Proportional to 64,878.96, 89,531.76 and 36,584.64

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Solution

The fourth proportional to 64,878.96, 89,531.76 and 36,584.64 is: 50,486.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,878.96 : 89,531.76 = 36,584.64 : x
  2. Step 2: Convert to fraction form
    64,878.96/89,531.76 = 36,584.64/x
  3. Step 3: Cross multiply
    64,878.96x = 89,531.76 × 36,584.64
  4. Step 4: Simplify right side
    64,878.96x = 3,275,487,208.17
  5. Step 5: Solve for x
    x = 3,275,487,208.17/64,878.96
  6. Step 6: Final answer
    x = 50,486.12

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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.