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Finding the Fourth Proportional to 118,697.63, 163,805.60 and 64,982.48

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Solution

The fourth proportional to 118,697.63, 163,805.60 and 64,982.48 is: 89,677.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,697.63 : 163,805.60 = 64,982.48 : x
  2. Step 2: Convert to fraction form
    118,697.63/163,805.60 = 64,982.48/x
  3. Step 3: Cross multiply
    118,697.63x = 163,805.60 × 64,982.48
  4. Step 4: Simplify right side
    118,697.63x = 10,644,493,800.98
  5. Step 5: Solve for x
    x = 10,644,493,800.98/118,697.63
  6. Step 6: Final answer
    x = 89,677.39

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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.