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Finding the Fourth Proportional to 101,174.61, 139,621.17 and 55,852.66

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Solution

The fourth proportional to 101,174.61, 139,621.17 and 55,852.66 is: 77,076.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,174.61 : 139,621.17 = 55,852.66 : x
  2. Step 2: Convert to fraction form
    101,174.61/139,621.17 = 55,852.66/x
  3. Step 3: Cross multiply
    101,174.61x = 139,621.17 × 55,852.66
  4. Step 4: Simplify right side
    101,174.61x = 7,798,213,335.42
  5. Step 5: Solve for x
    x = 7,798,213,335.42/101,174.61
  6. Step 6: Final answer
    x = 77,076.78

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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.