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Finding the Fourth Proportional to 118,973.92, 164,188.60 and 65,261.20

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Solution

The fourth proportional to 118,973.92, 164,188.60 and 65,261.20 is: 90,062.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,973.92 : 164,188.60 = 65,261.20 : x
  2. Step 2: Convert to fraction form
    118,973.92/164,188.60 = 65,261.20/x
  3. Step 3: Cross multiply
    118,973.92x = 164,188.60 × 65,261.20
  4. Step 4: Simplify right side
    118,973.92x = 10,715,145,062.32
  5. Step 5: Solve for x
    x = 10,715,145,062.32/118,973.92
  6. Step 6: Final answer
    x = 90,062.97

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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.