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Finding the Fourth Proportional to 368,231.86, 508,155.15 and 207,086.86

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Solution

The fourth proportional to 368,231.86, 508,155.15 and 207,086.86 is: 285,777.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,231.86 : 508,155.15 = 207,086.86 : x
  2. Step 2: Convert to fraction form
    368,231.86/508,155.15 = 207,086.86/x
  3. Step 3: Cross multiply
    368,231.86x = 508,155.15 × 207,086.86
  4. Step 4: Simplify right side
    368,231.86x = 105,232,254,406.33
  5. Step 5: Solve for x
    x = 105,232,254,406.33/368,231.86
  6. Step 6: Final answer
    x = 285,777.16

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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.