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Finding the Fourth Proportional to 368,379.86, 508,363.46 and 207,235.02

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Solution

The fourth proportional to 368,379.86, 508,363.46 and 207,235.02 is: 285,983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,379.86 : 508,363.46 = 207,235.02 : x
  2. Step 2: Convert to fraction form
    368,379.86/508,363.46 = 207,235.02/x
  3. Step 3: Cross multiply
    368,379.86x = 508,363.46 × 207,235.02
  4. Step 4: Simplify right side
    368,379.86x = 105,350,711,800.37
  5. Step 5: Solve for x
    x = 105,350,711,800.37/368,379.86
  6. Step 6: Final answer
    x = 285,983.91

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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.