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Finding the Fourth Proportional to 401,994.70, 554,755.17 and 220,714.54

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Solution

The fourth proportional to 401,994.70, 554,755.17 and 220,714.54 is: 304,587.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,994.70 : 554,755.17 = 220,714.54 : x
  2. Step 2: Convert to fraction form
    401,994.70/554,755.17 = 220,714.54/x
  3. Step 3: Cross multiply
    401,994.70x = 554,755.17 × 220,714.54
  4. Step 4: Simplify right side
    401,994.70x = 122,442,532,159.17
  5. Step 5: Solve for x
    x = 122,442,532,159.17/401,994.70
  6. Step 6: Final answer
    x = 304,587.43

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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.