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Finding the Fourth Proportional to 118,698.37, 163,805.81 and 64,982.53

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Solution

The fourth proportional to 118,698.37, 163,805.81 and 64,982.53 is: 89,677.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,698.37 : 163,805.81 = 64,982.53 : x
  2. Step 2: Convert to fraction form
    118,698.37/163,805.81 = 64,982.53/x
  3. Step 3: Cross multiply
    118,698.37x = 163,805.81 × 64,982.53
  4. Step 4: Simplify right side
    118,698.37x = 10,644,515,637.59
  5. Step 5: Solve for x
    x = 10,644,515,637.59/118,698.37
  6. Step 6: Final answer
    x = 89,677.02

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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.