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Finding the Fourth Proportional to 222,572.61, 307,149.71 and 120,600.86

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Solution

The fourth proportional to 222,572.61, 307,149.71 and 120,600.86 is: 166,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,572.61 : 307,149.71 = 120,600.86 : x
  2. Step 2: Convert to fraction form
    222,572.61/307,149.71 = 120,600.86/x
  3. Step 3: Cross multiply
    222,572.61x = 307,149.71 × 120,600.86
  4. Step 4: Simplify right side
    222,572.61x = 37,042,517,036.00
  5. Step 5: Solve for x
    x = 37,042,517,036.00/222,572.61
  6. Step 6: Final answer
    x = 166,428.91

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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.