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Finding the Fourth Proportional to 356,879.31, 535,149.46 and 207,165.52

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Solution

The fourth proportional to 356,879.31, 535,149.46 and 207,165.52 is: 310,649.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,879.31 : 535,149.46 = 207,165.52 : x
  2. Step 2: Convert to fraction form
    356,879.31/535,149.46 = 207,165.52/x
  3. Step 3: Cross multiply
    356,879.31x = 535,149.46 × 207,165.52
  4. Step 4: Simplify right side
    356,879.31x = 110,864,516,158.62
  5. Step 5: Solve for x
    x = 110,864,516,158.62/356,879.31
  6. Step 6: Final answer
    x = 310,649.88

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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.