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Finding the Fourth Proportional to 118,979.48, 164,190.54 and 65,264.64

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Solution

The fourth proportional to 118,979.48, 164,190.54 and 65,264.64 is: 90,064.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,979.48 : 164,190.54 = 65,264.64 : x
  2. Step 2: Convert to fraction form
    118,979.48/164,190.54 = 65,264.64/x
  3. Step 3: Cross multiply
    118,979.48x = 164,190.54 × 65,264.64
  4. Step 4: Simplify right side
    118,979.48x = 10,715,836,113.53
  5. Step 5: Solve for x
    x = 10,715,836,113.53/118,979.48
  6. Step 6: Final answer
    x = 90,064.57

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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.