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Finding the Fourth Proportional to 422,035.92, 633,116.45 and 122,518.98

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Solution

The fourth proportional to 422,035.92, 633,116.45 and 122,518.98 is: 183,796.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,035.92 : 633,116.45 = 122,518.98 : x
  2. Step 2: Convert to fraction form
    422,035.92/633,116.45 = 122,518.98/x
  3. Step 3: Cross multiply
    422,035.92x = 633,116.45 × 122,518.98
  4. Step 4: Simplify right side
    422,035.92x = 77,568,781,981.52
  5. Step 5: Solve for x
    x = 77,568,781,981.52/422,035.92
  6. Step 6: Final answer
    x = 183,796.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.