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Finding the Fourth Proportional to 415,910.55, 623,863.80 and 163,012.35

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Solution

The fourth proportional to 415,910.55, 623,863.80 and 163,012.35 is: 244,517.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,910.55 : 623,863.80 = 163,012.35 : x
  2. Step 2: Convert to fraction form
    415,910.55/623,863.80 = 163,012.35/x
  3. Step 3: Cross multiply
    415,910.55x = 623,863.80 × 163,012.35
  4. Step 4: Simplify right side
    415,910.55x = 101,697,504,117.93
  5. Step 5: Solve for x
    x = 101,697,504,117.93/415,910.55
  6. Step 6: Final answer
    x = 244,517.73

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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.