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Finding the Fourth Proportional to 640,198.44, 883,398.60 and 353,701.44

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Solution

The fourth proportional to 640,198.44, 883,398.60 and 353,701.44 is: 488,066.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,198.44 : 883,398.60 = 353,701.44 : x
  2. Step 2: Convert to fraction form
    640,198.44/883,398.60 = 353,701.44/x
  3. Step 3: Cross multiply
    640,198.44x = 883,398.60 × 353,701.44
  4. Step 4: Simplify right side
    640,198.44x = 312,459,356,913.98
  5. Step 5: Solve for x
    x = 312,459,356,913.98/640,198.44
  6. Step 6: Final answer
    x = 488,066.41

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1.5x scale

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.