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Finding the Fourth Proportional to 60,705.80, 91,067.03 and 20,714.06

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Solution

The fourth proportional to 60,705.80, 91,067.03 and 20,714.06 is: 31,073.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,705.80 : 91,067.03 = 20,714.06 : x
  2. Step 2: Convert to fraction form
    60,705.80/91,067.03 = 20,714.06/x
  3. Step 3: Cross multiply
    60,705.80x = 91,067.03 × 20,714.06
  4. Step 4: Simplify right side
    60,705.80x = 1,886,367,364.54
  5. Step 5: Solve for x
    x = 1,886,367,364.54/60,705.80
  6. Step 6: Final answer
    x = 31,073.93

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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.