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Finding the Fourth Proportional to 573,717.06, 791,718.30 and 319,062.78

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Solution

The fourth proportional to 573,717.06, 791,718.30 and 319,062.78 is: 440,300.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,717.06 : 791,718.30 = 319,062.78 : x
  2. Step 2: Convert to fraction form
    573,717.06/791,718.30 = 319,062.78/x
  3. Step 3: Cross multiply
    573,717.06x = 791,718.30 × 319,062.78
  4. Step 4: Simplify right side
    573,717.06x = 252,607,841,774.87
  5. Step 5: Solve for x
    x = 252,607,841,774.87/573,717.06
  6. Step 6: Final answer
    x = 440,300.38

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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.