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Finding the Fourth Proportional to 451,805.42, 623,496.30 and 247,856.70

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Solution

The fourth proportional to 451,805.42, 623,496.30 and 247,856.70 is: 342,044.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,805.42 : 623,496.30 = 247,856.70 : x
  2. Step 2: Convert to fraction form
    451,805.42/623,496.30 = 247,856.70/x
  3. Step 3: Cross multiply
    451,805.42x = 623,496.30 × 247,856.70
  4. Step 4: Simplify right side
    451,805.42x = 154,537,735,380.21
  5. Step 5: Solve for x
    x = 154,537,735,380.21/451,805.42
  6. Step 6: Final answer
    x = 342,044.89

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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.