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Finding the Fourth Proportional to 573,721.92, 791,730.72 and 319,060.80

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Solution

The fourth proportional to 573,721.92, 791,730.72 and 319,060.80 is: 440,300.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,721.92 : 791,730.72 = 319,060.80 : x
  2. Step 2: Convert to fraction form
    573,721.92/791,730.72 = 319,060.80/x
  3. Step 3: Cross multiply
    573,721.92x = 791,730.72 × 319,060.80
  4. Step 4: Simplify right side
    573,721.92x = 252,610,236,907.78
  5. Step 5: Solve for x
    x = 252,610,236,907.78/573,721.92
  6. Step 6: Final answer
    x = 440,300.83

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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.