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Finding the Fourth Proportional to 171,647.10, 236,967.26 and 117,280.98

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Solution

The fourth proportional to 171,647.10, 236,967.26 and 117,280.98 is: 161,912.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,647.10 : 236,967.26 = 117,280.98 : x
  2. Step 2: Convert to fraction form
    171,647.10/236,967.26 = 117,280.98/x
  3. Step 3: Cross multiply
    171,647.10x = 236,967.26 × 117,280.98
  4. Step 4: Simplify right side
    171,647.10x = 27,791,751,894.31
  5. Step 5: Solve for x
    x = 27,791,751,894.31/171,647.10
  6. Step 6: Final answer
    x = 161,912.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.