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Finding the Fourth Proportional to 101,274.33, 139,770.45 and 61,008.42

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Solution

The fourth proportional to 101,274.33, 139,770.45 and 61,008.42 is: 84,198.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,274.33 : 139,770.45 = 61,008.42 : x
  2. Step 2: Convert to fraction form
    101,274.33/139,770.45 = 61,008.42/x
  3. Step 3: Cross multiply
    101,274.33x = 139,770.45 × 61,008.42
  4. Step 4: Simplify right side
    101,274.33x = 8,527,174,317.19
  5. Step 5: Solve for x
    x = 8,527,174,317.19/101,274.33
  6. Step 6: Final answer
    x = 84,198.77

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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.