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Finding the Fourth Proportional to 134,679.90, 202,003.65 and 55,785.90

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Solution

The fourth proportional to 134,679.90, 202,003.65 and 55,785.90 is: 83,672.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,679.90 : 202,003.65 = 55,785.90 : x
  2. Step 2: Convert to fraction form
    134,679.90/202,003.65 = 55,785.90/x
  3. Step 3: Cross multiply
    134,679.90x = 202,003.65 × 55,785.90
  4. Step 4: Simplify right side
    134,679.90x = 11,268,955,418.54
  5. Step 5: Solve for x
    x = 11,268,955,418.54/134,679.90
  6. Step 6: Final answer
    x = 83,672.14

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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.