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Finding the Fourth Proportional to 251,840.83, 347,484.09 and 211,169.47

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Solution

The fourth proportional to 251,840.83, 347,484.09 and 211,169.47 is: 291,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,840.83 : 347,484.09 = 211,169.47 : x
  2. Step 2: Convert to fraction form
    251,840.83/347,484.09 = 211,169.47/x
  3. Step 3: Cross multiply
    251,840.83x = 347,484.09 × 211,169.47
  4. Step 4: Simplify right side
    251,840.83x = 73,378,031,118.73
  5. Step 5: Solve for x
    x = 73,378,031,118.73/251,840.83
  6. Step 6: Final answer
    x = 291,366.70

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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.