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Finding the Fourth Proportional to 439,058.66, 605,905.64 and 257,772.76

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Solution

The fourth proportional to 439,058.66, 605,905.64 and 257,772.76 is: 355,729.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,058.66 : 605,905.64 = 257,772.76 : x
  2. Step 2: Convert to fraction form
    439,058.66/605,905.64 = 257,772.76/x
  3. Step 3: Cross multiply
    439,058.66x = 605,905.64 × 257,772.76
  4. Step 4: Simplify right side
    439,058.66x = 156,185,969,122.37
  5. Step 5: Solve for x
    x = 156,185,969,122.37/439,058.66
  6. Step 6: Final answer
    x = 355,729.16

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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.