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Finding the Fourth Proportional to 577,883.81, 797,425.36 and 391,235.60

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Solution

The fourth proportional to 577,883.81, 797,425.36 and 391,235.60 is: 539,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,883.81 : 797,425.36 = 391,235.60 : x
  2. Step 2: Convert to fraction form
    577,883.81/797,425.36 = 391,235.60/x
  3. Step 3: Cross multiply
    577,883.81x = 797,425.36 × 391,235.60
  4. Step 4: Simplify right side
    577,883.81x = 311,981,190,190.29
  5. Step 5: Solve for x
    x = 311,981,190,190.29/577,883.81
  6. Step 6: Final answer
    x = 539,868.37

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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.