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Finding the Fourth Proportional to 408,479.01, 563,661.55 and 236,362.65

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Solution

The fourth proportional to 408,479.01, 563,661.55 and 236,362.65 is: 326,157.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,479.01 : 563,661.55 = 236,362.65 : x
  2. Step 2: Convert to fraction form
    408,479.01/563,661.55 = 236,362.65/x
  3. Step 3: Cross multiply
    408,479.01x = 563,661.55 × 236,362.65
  4. Step 4: Simplify right side
    408,479.01x = 133,228,537,661.11
  5. Step 5: Solve for x
    x = 133,228,537,661.11/408,479.01
  6. Step 6: Final answer
    x = 326,157.61

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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.