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Finding the Fourth Proportional to 697,820.96, 963,016.15 and 391,951.29

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Solution

The fourth proportional to 697,820.96, 963,016.15 and 391,951.29 is: 540,905.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,820.96 : 963,016.15 = 391,951.29 : x
  2. Step 2: Convert to fraction form
    697,820.96/963,016.15 = 391,951.29/x
  3. Step 3: Cross multiply
    697,820.96x = 963,016.15 × 391,951.29
  4. Step 4: Simplify right side
    697,820.96x = 377,455,422,283.33
  5. Step 5: Solve for x
    x = 377,455,422,283.33/697,820.96
  6. Step 6: Final answer
    x = 540,905.83

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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.