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Finding the Fourth Proportional to 352,983.01, 529,691.82 and 139,714.61

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Solution

The fourth proportional to 352,983.01, 529,691.82 and 139,714.61 is: 209,657.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,983.01 : 529,691.82 = 139,714.61 : x
  2. Step 2: Convert to fraction form
    352,983.01/529,691.82 = 139,714.61/x
  3. Step 3: Cross multiply
    352,983.01x = 529,691.82 × 139,714.61
  4. Step 4: Simplify right side
    352,983.01x = 74,005,687,375.72
  5. Step 5: Solve for x
    x = 74,005,687,375.72/352,983.01
  6. Step 6: Final answer
    x = 209,657.93

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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.