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Finding the Fourth Proportional to 697,169.35, 961,874.40 and 391,200.76

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Solution

The fourth proportional to 697,169.35, 961,874.40 and 391,200.76 is: 539,733.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,169.35 : 961,874.40 = 391,200.76 : x
  2. Step 2: Convert to fraction form
    697,169.35/961,874.40 = 391,200.76/x
  3. Step 3: Cross multiply
    697,169.35x = 961,874.40 × 391,200.76
  4. Step 4: Simplify right side
    697,169.35x = 376,285,996,304.54
  5. Step 5: Solve for x
    x = 376,285,996,304.54/697,169.35
  6. Step 6: Final answer
    x = 539,733.99

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Double scale
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1.5x scale

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.