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Finding the Fourth Proportional to 573,122.39, 790,917.11 and 315,023.21

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Solution

The fourth proportional to 573,122.39, 790,917.11 and 315,023.21 is: 434,736.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,122.39 : 790,917.11 = 315,023.21 : x
  2. Step 2: Convert to fraction form
    573,122.39/790,917.11 = 315,023.21/x
  3. Step 3: Cross multiply
    573,122.39x = 790,917.11 × 315,023.21
  4. Step 4: Simplify right side
    573,122.39x = 249,157,241,306.42
  5. Step 5: Solve for x
    x = 249,157,241,306.42/573,122.39
  6. Step 6: Final answer
    x = 434,736.54

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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.