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Finding the Fourth Proportional to 118,713.54, 163,819.62 and 64,997.58

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Solution

The fourth proportional to 118,713.54, 163,819.62 and 64,997.58 is: 89,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,713.54 : 163,819.62 = 64,997.58 : x
  2. Step 2: Convert to fraction form
    118,713.54/163,819.62 = 64,997.58/x
  3. Step 3: Cross multiply
    118,713.54x = 163,819.62 × 64,997.58
  4. Step 4: Simplify right side
    118,713.54x = 10,647,878,856.52
  5. Step 5: Solve for x
    x = 10,647,878,856.52/118,713.54
  6. Step 6: Final answer
    x = 89,693.89

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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.