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Finding the Fourth Proportional to 177,872.80, 266,679.60 and 72,637.60

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Solution

The fourth proportional to 177,872.80, 266,679.60 and 72,637.60 is: 108,903.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,872.80 : 266,679.60 = 72,637.60 : x
  2. Step 2: Convert to fraction form
    177,872.80/266,679.60 = 72,637.60/x
  3. Step 3: Cross multiply
    177,872.80x = 266,679.60 × 72,637.60
  4. Step 4: Simplify right side
    177,872.80x = 19,370,966,112.96
  5. Step 5: Solve for x
    x = 19,370,966,112.96/177,872.80
  6. Step 6: Final answer
    x = 108,903.48

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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.