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Finding the Fourth Proportional to 421,958.49, 582,251.58 and 336,136.11

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Solution

The fourth proportional to 421,958.49, 582,251.58 and 336,136.11 is: 463,827.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,958.49 : 582,251.58 = 336,136.11 : x
  2. Step 2: Convert to fraction form
    421,958.49/582,251.58 = 336,136.11/x
  3. Step 3: Cross multiply
    421,958.49x = 582,251.58 × 336,136.11
  4. Step 4: Simplify right side
    421,958.49x = 195,715,781,142.55
  5. Step 5: Solve for x
    x = 195,715,781,142.55/421,958.49
  6. Step 6: Final answer
    x = 463,827.10

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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.