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Finding the Fourth Proportional to 118,936.53, 164,130.98 and 65,221.11

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Solution

The fourth proportional to 118,936.53, 164,130.98 and 65,221.11 is: 90,004.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,936.53 : 164,130.98 = 65,221.11 : x
  2. Step 2: Convert to fraction form
    118,936.53/164,130.98 = 65,221.11/x
  3. Step 3: Cross multiply
    118,936.53x = 164,130.98 × 65,221.11
  4. Step 4: Simplify right side
    118,936.53x = 10,704,804,374.88
  5. Step 5: Solve for x
    x = 10,704,804,374.88/118,936.53
  6. Step 6: Final answer
    x = 90,004.34

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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.