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Finding the Fourth Proportional to 177,853.76, 266,781.08 and 72,672.72

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Solution

The fourth proportional to 177,853.76, 266,781.08 and 72,672.72 is: 109,009.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,853.76 : 266,781.08 = 72,672.72 : x
  2. Step 2: Convert to fraction form
    177,853.76/266,781.08 = 72,672.72/x
  3. Step 3: Cross multiply
    177,853.76x = 266,781.08 × 72,672.72
  4. Step 4: Simplify right side
    177,853.76x = 19,387,706,728.14
  5. Step 5: Solve for x
    x = 19,387,706,728.14/177,853.76
  6. Step 6: Final answer
    x = 109,009.26

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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.