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Finding the Fourth Proportional to 118,605.47, 177,620.24 and 65,215.94

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Solution

The fourth proportional to 118,605.47, 177,620.24 and 65,215.94 is: 97,665.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,605.47 : 177,620.24 = 65,215.94 : x
  2. Step 2: Convert to fraction form
    118,605.47/177,620.24 = 65,215.94/x
  3. Step 3: Cross multiply
    118,605.47x = 177,620.24 × 65,215.94
  4. Step 4: Simplify right side
    118,605.47x = 11,583,670,189.56
  5. Step 5: Solve for x
    x = 11,583,670,189.56/118,605.47
  6. Step 6: Final answer
    x = 97,665.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.