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Finding the Fourth Proportional to 118,635.96, 163,710.60 and 64,910.28

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Solution

The fourth proportional to 118,635.96, 163,710.60 and 64,910.28 is: 89,572.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,635.96 : 163,710.60 = 64,910.28 : x
  2. Step 2: Convert to fraction form
    118,635.96/163,710.60 = 64,910.28/x
  3. Step 3: Cross multiply
    118,635.96x = 163,710.60 × 64,910.28
  4. Step 4: Simplify right side
    118,635.96x = 10,626,500,884.97
  5. Step 5: Solve for x
    x = 10,626,500,884.97/118,635.96
  6. Step 6: Final answer
    x = 89,572.34

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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.