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Finding the Fourth Proportional to 199,906.79, 275,967 and 118,248.86

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Solution

The fourth proportional to 199,906.79, 275,967 and 118,248.86 is: 163,240.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,906.79 : 275,967 = 118,248.86 : x
  2. Step 2: Convert to fraction form
    199,906.79/275,967 = 118,248.86/x
  3. Step 3: Cross multiply
    199,906.79x = 275,967 × 118,248.86
  4. Step 4: Simplify right side
    199,906.79x = 32,632,783,837.54
  5. Step 5: Solve for x
    x = 32,632,783,837.54/199,906.79
  6. Step 6: Final answer
    x = 163,240.00

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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.