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Finding the Fourth Proportional to 702,149.49, 968,991.03 and 396,207.93

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Solution

The fourth proportional to 702,149.49, 968,991.03 and 396,207.93 is: 546,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,149.49 : 968,991.03 = 396,207.93 : x
  2. Step 2: Convert to fraction form
    702,149.49/968,991.03 = 396,207.93/x
  3. Step 3: Cross multiply
    702,149.49x = 968,991.03 × 396,207.93
  4. Step 4: Simplify right side
    702,149.49x = 383,921,930,184.87
  5. Step 5: Solve for x
    x = 383,921,930,184.87/702,149.49
  6. Step 6: Final answer
    x = 546,780.90

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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.