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Finding the Fourth Proportional to 343,963.67, 474,653.89 and 191,011.55

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Solution

The fourth proportional to 343,963.67, 474,653.89 and 191,011.55 is: 263,587.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,963.67 : 474,653.89 = 191,011.55 : x
  2. Step 2: Convert to fraction form
    343,963.67/474,653.89 = 191,011.55/x
  3. Step 3: Cross multiply
    343,963.67x = 474,653.89 × 191,011.55
  4. Step 4: Simplify right side
    343,963.67x = 90,664,378,183.21
  5. Step 5: Solve for x
    x = 90,664,378,183.21/343,963.67
  6. Step 6: Final answer
    x = 263,587.08

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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.