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Finding the Fourth Proportional to 573,615.91, 791,590.61 and 318,961.63

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Solution

The fourth proportional to 573,615.91, 791,590.61 and 318,961.63 is: 440,167.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,615.91 : 791,590.61 = 318,961.63 : x
  2. Step 2: Convert to fraction form
    573,615.91/791,590.61 = 318,961.63/x
  3. Step 3: Cross multiply
    573,615.91x = 791,590.61 × 318,961.63
  4. Step 4: Simplify right side
    573,615.91x = 252,487,025,705.53
  5. Step 5: Solve for x
    x = 252,487,025,705.53/573,615.91
  6. Step 6: Final answer
    x = 440,167.41

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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.