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Finding the Fourth Proportional to 573,540.90, 791,483.82 and 318,876.90

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Solution

The fourth proportional to 573,540.90, 791,483.82 and 318,876.90 is: 440,048.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,540.90 : 791,483.82 = 318,876.90 : x
  2. Step 2: Convert to fraction form
    573,540.90/791,483.82 = 318,876.90/x
  3. Step 3: Cross multiply
    573,540.90x = 791,483.82 × 318,876.90
  4. Step 4: Simplify right side
    573,540.90x = 252,385,906,921.76
  5. Step 5: Solve for x
    x = 252,385,906,921.76/573,540.90
  6. Step 6: Final answer
    x = 440,048.66

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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.