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Finding the Fourth Proportional to 368,638.90, 552,773.36 and 178,980.44

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Solution

The fourth proportional to 368,638.90, 552,773.36 and 178,980.44 is: 268,380.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,638.90 : 552,773.36 = 178,980.44 : x
  2. Step 2: Convert to fraction form
    368,638.90/552,773.36 = 178,980.44/x
  3. Step 3: Cross multiply
    368,638.90x = 552,773.36 × 178,980.44
  4. Step 4: Simplify right side
    368,638.90x = 98,935,616,876.66
  5. Step 5: Solve for x
    x = 98,935,616,876.66/368,638.90
  6. Step 6: Final answer
    x = 268,380.84

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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.