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Finding the Fourth Proportional to 118,612.17, 177,760.31 and 43,663.07

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Solution

The fourth proportional to 118,612.17, 177,760.31 and 43,663.07 is: 65,436.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,612.17 : 177,760.31 = 43,663.07 : x
  2. Step 2: Convert to fraction form
    118,612.17/177,760.31 = 43,663.07/x
  3. Step 3: Cross multiply
    118,612.17x = 177,760.31 × 43,663.07
  4. Step 4: Simplify right side
    118,612.17x = 7,761,561,084.84
  5. Step 5: Solve for x
    x = 7,761,561,084.84/118,612.17
  6. Step 6: Final answer
    x = 65,436.46

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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.