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Finding the Fourth Proportional to 422,434.60, 633,651.90 and 369,946.60

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Solution

The fourth proportional to 422,434.60, 633,651.90 and 369,946.60 is: 554,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,434.60 : 633,651.90 = 369,946.60 : x
  2. Step 2: Convert to fraction form
    422,434.60/633,651.90 = 369,946.60/x
  3. Step 3: Cross multiply
    422,434.60x = 633,651.90 × 369,946.60
  4. Step 4: Simplify right side
    422,434.60x = 234,417,365,988.54
  5. Step 5: Solve for x
    x = 234,417,365,988.54/422,434.60
  6. Step 6: Final answer
    x = 554,919.90

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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.