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Finding the Fourth Proportional to 118,986.37, 164,201.44 and 65,271.82

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Solution

The fourth proportional to 118,986.37, 164,201.44 and 65,271.82 is: 90,075.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,986.37 : 164,201.44 = 65,271.82 : x
  2. Step 2: Convert to fraction form
    118,986.37/164,201.44 = 65,271.82/x
  3. Step 3: Cross multiply
    118,986.37x = 164,201.44 × 65,271.82
  4. Step 4: Simplify right side
    118,986.37x = 10,717,726,835.42
  5. Step 5: Solve for x
    x = 10,717,726,835.42/118,986.37
  6. Step 6: Final answer
    x = 90,075.25

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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.