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Finding the Fourth Proportional to 587,806.37, 811,345.17 and 383,888.09

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Solution

The fourth proportional to 587,806.37, 811,345.17 and 383,888.09 is: 529,878.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,806.37 : 811,345.17 = 383,888.09 : x
  2. Step 2: Convert to fraction form
    587,806.37/811,345.17 = 383,888.09/x
  3. Step 3: Cross multiply
    587,806.37x = 811,345.17 × 383,888.09
  4. Step 4: Simplify right side
    587,806.37x = 311,465,751,109.97
  5. Step 5: Solve for x
    x = 311,465,751,109.97/587,806.37
  6. Step 6: Final answer
    x = 529,878.15

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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.