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Finding the Fourth Proportional to 123,246.59, 170,080.30 and 66,657.96

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Solution

The fourth proportional to 123,246.59, 170,080.30 and 66,657.96 is: 91,987.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,246.59 : 170,080.30 = 66,657.96 : x
  2. Step 2: Convert to fraction form
    123,246.59/170,080.30 = 66,657.96/x
  3. Step 3: Cross multiply
    123,246.59x = 170,080.30 × 66,657.96
  4. Step 4: Simplify right side
    123,246.59x = 11,337,205,917.51
  5. Step 5: Solve for x
    x = 11,337,205,917.51/123,246.59
  6. Step 6: Final answer
    x = 91,987.99

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