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Finding the Fourth Proportional to 347,156.72, 479,120.64 and 194,203.40

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Solution

The fourth proportional to 347,156.72, 479,120.64 and 194,203.40 is: 268,025.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,156.72 : 479,120.64 = 194,203.40 : x
  2. Step 2: Convert to fraction form
    347,156.72/479,120.64 = 194,203.40/x
  3. Step 3: Cross multiply
    347,156.72x = 479,120.64 × 194,203.40
  4. Step 4: Simplify right side
    347,156.72x = 93,046,857,298.18
  5. Step 5: Solve for x
    x = 93,046,857,298.18/347,156.72
  6. Step 6: Final answer
    x = 268,025.51

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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.