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Finding the Fourth Proportional to 590,815.74, 886,317.33 and 211,728.31

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Solution

The fourth proportional to 590,815.74, 886,317.33 and 211,728.31 is: 317,626.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,815.74 : 886,317.33 = 211,728.31 : x
  2. Step 2: Convert to fraction form
    590,815.74/886,317.33 = 211,728.31/x
  3. Step 3: Cross multiply
    590,815.74x = 886,317.33 × 211,728.31
  4. Step 4: Simplify right side
    590,815.74x = 187,658,470,404.61
  5. Step 5: Solve for x
    x = 187,658,470,404.61/590,815.74
  6. Step 6: Final answer
    x = 317,626.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.