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Finding the Fourth Proportional to 717,771.19, 990,546.67 and 411,903.52

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Solution

The fourth proportional to 717,771.19, 990,546.67 and 411,903.52 is: 568,439.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,771.19 : 990,546.67 = 411,903.52 : x
  2. Step 2: Convert to fraction form
    717,771.19/990,546.67 = 411,903.52/x
  3. Step 3: Cross multiply
    717,771.19x = 990,546.67 × 411,903.52
  4. Step 4: Simplify right side
    717,771.19x = 408,009,656,742.84
  5. Step 5: Solve for x
    x = 408,009,656,742.84/717,771.19
  6. Step 6: Final answer
    x = 568,439.73

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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.