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Finding the Fourth Proportional to 395,110.64, 544,158.56 and 341,378.48

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Solution

The fourth proportional to 395,110.64, 544,158.56 and 341,378.48 is: 470,156.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,110.64 : 544,158.56 = 341,378.48 : x
  2. Step 2: Convert to fraction form
    395,110.64/544,158.56 = 341,378.48/x
  3. Step 3: Cross multiply
    395,110.64x = 544,158.56 × 341,378.48
  4. Step 4: Simplify right side
    395,110.64x = 185,764,022,091.79
  5. Step 5: Solve for x
    x = 185,764,022,091.79/395,110.64
  6. Step 6: Final answer
    x = 470,156.97

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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.