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Finding the Fourth Proportional to 206,813.86, 310,249.95 and 73,654.72

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Solution

The fourth proportional to 206,813.86, 310,249.95 and 73,654.72 is: 110,492.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,813.86 : 310,249.95 = 73,654.72 : x
  2. Step 2: Convert to fraction form
    206,813.86/310,249.95 = 73,654.72/x
  3. Step 3: Cross multiply
    206,813.86x = 310,249.95 × 73,654.72
  4. Step 4: Simplify right side
    206,813.86x = 22,851,372,145.43
  5. Step 5: Solve for x
    x = 22,851,372,145.43/206,813.86
  6. Step 6: Final answer
    x = 110,492.46

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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.