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Finding the Fourth Proportional to 118,998.60, 164,216.22 and 65,283.48

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Solution

The fourth proportional to 118,998.60, 164,216.22 and 65,283.48 is: 90,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,998.60 : 164,216.22 = 65,283.48 : x
  2. Step 2: Convert to fraction form
    118,998.60/164,216.22 = 65,283.48/x
  3. Step 3: Cross multiply
    118,998.60x = 164,216.22 × 65,283.48
  4. Step 4: Simplify right side
    118,998.60x = 10,720,606,314.05
  5. Step 5: Solve for x
    x = 10,720,606,314.05/118,998.60
  6. Step 6: Final answer
    x = 90,090.19

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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.