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Finding the Fourth Proportional to 118,975.17, 164,190.33 and 65,262.45

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Solution

The fourth proportional to 118,975.17, 164,190.33 and 65,262.45 is: 90,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,975.17 : 164,190.33 = 65,262.45 : x
  2. Step 2: Convert to fraction form
    118,975.17/164,190.33 = 65,262.45/x
  3. Step 3: Cross multiply
    118,975.17x = 164,190.33 × 65,262.45
  4. Step 4: Simplify right side
    118,975.17x = 10,715,463,202.11
  5. Step 5: Solve for x
    x = 10,715,463,202.11/118,975.17
  6. Step 6: Final answer
    x = 90,064.70

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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.