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Finding the Fourth Proportional to 699,890.76, 965,849.49 and 409,558.14

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Solution

The fourth proportional to 699,890.76, 965,849.49 and 409,558.14 is: 565,190.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,890.76 : 965,849.49 = 409,558.14 : x
  2. Step 2: Convert to fraction form
    699,890.76/965,849.49 = 409,558.14/x
  3. Step 3: Cross multiply
    699,890.76x = 965,849.49 × 409,558.14
  4. Step 4: Simplify right side
    699,890.76x = 395,571,520,644.35
  5. Step 5: Solve for x
    x = 395,571,520,644.35/699,890.76
  6. Step 6: Final answer
    x = 565,190.37

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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.