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Finding the Fourth Proportional to 241,420.86, 361,990.08 and 72,890.64

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Solution

The fourth proportional to 241,420.86, 361,990.08 and 72,890.64 is: 109,293.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    241,420.86 : 361,990.08 = 72,890.64 : x
  2. Step 2: Convert to fraction form
    241,420.86/361,990.08 = 72,890.64/x
  3. Step 3: Cross multiply
    241,420.86x = 361,990.08 × 72,890.64
  4. Step 4: Simplify right side
    241,420.86x = 26,385,688,604.85
  5. Step 5: Solve for x
    x = 26,385,688,604.85/241,420.86
  6. Step 6: Final answer
    x = 109,293.33

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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.