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Finding the Fourth Proportional to 573,820.73, 791,840.89 and 319,155.51

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Solution

The fourth proportional to 573,820.73, 791,840.89 and 319,155.51 is: 440,416.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,820.73 : 791,840.89 = 319,155.51 : x
  2. Step 2: Convert to fraction form
    573,820.73/791,840.89 = 319,155.51/x
  3. Step 3: Cross multiply
    573,820.73x = 791,840.89 × 319,155.51
  4. Step 4: Simplify right side
    573,820.73x = 252,720,383,086.80
  5. Step 5: Solve for x
    x = 252,720,383,086.80/573,820.73
  6. Step 6: Final answer
    x = 440,416.96

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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.