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Finding the Fourth Proportional to 568,189.92, 784,386 and 353,399.28

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Solution

The fourth proportional to 568,189.92, 784,386 and 353,399.28 is: 487,867.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,189.92 : 784,386 = 353,399.28 : x
  2. Step 2: Convert to fraction form
    568,189.92/784,386 = 353,399.28/x
  3. Step 3: Cross multiply
    568,189.92x = 784,386 × 353,399.28
  4. Step 4: Simplify right side
    568,189.92x = 277,201,447,642.08
  5. Step 5: Solve for x
    x = 277,201,447,642.08/568,189.92
  6. Step 6: Final answer
    x = 487,867.59

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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.