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Finding the Fourth Proportional to 573,623.76, 791,649.78 and 319,024.56

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Solution

The fourth proportional to 573,623.76, 791,649.78 and 319,024.56 is: 440,281.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,623.76 : 791,649.78 = 319,024.56 : x
  2. Step 2: Convert to fraction form
    573,623.76/791,649.78 = 319,024.56/x
  3. Step 3: Cross multiply
    573,623.76x = 791,649.78 × 319,024.56
  4. Step 4: Simplify right side
    573,623.76x = 252,555,722,738.60
  5. Step 5: Solve for x
    x = 252,555,722,738.60/573,623.76
  6. Step 6: Final answer
    x = 440,281.14

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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.