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Finding the Fourth Proportional to 408,661.13, 563,943.53 and 236,586.39

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Solution

The fourth proportional to 408,661.13, 563,943.53 and 236,586.39 is: 326,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,661.13 : 563,943.53 = 236,586.39 : x
  2. Step 2: Convert to fraction form
    408,661.13/563,943.53 = 236,586.39/x
  3. Step 3: Cross multiply
    408,661.13x = 563,943.53 × 236,586.39
  4. Step 4: Simplify right side
    408,661.13x = 133,421,359,923.91
  5. Step 5: Solve for x
    x = 133,421,359,923.91/408,661.13
  6. Step 6: Final answer
    x = 326,484.10

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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.