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Finding the Fourth Proportional to 106,980.26, 160,215.70 and 61,906.61

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Solution

The fourth proportional to 106,980.26, 160,215.70 and 61,906.61 is: 92,712.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,980.26 : 160,215.70 = 61,906.61 : x
  2. Step 2: Convert to fraction form
    106,980.26/160,215.70 = 61,906.61/x
  3. Step 3: Cross multiply
    106,980.26x = 160,215.70 × 61,906.61
  4. Step 4: Simplify right side
    106,980.26x = 9,918,409,899.93
  5. Step 5: Solve for x
    x = 9,918,409,899.93/106,980.26
  6. Step 6: Final answer
    x = 92,712.52

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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.