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Finding the Fourth Proportional to 568,297.98, 784,220.55 and 353,431.98

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Solution

The fourth proportional to 568,297.98, 784,220.55 and 353,431.98 is: 487,717.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,297.98 : 784,220.55 = 353,431.98 : x
  2. Step 2: Convert to fraction form
    568,297.98/784,220.55 = 353,431.98/x
  3. Step 3: Cross multiply
    568,297.98x = 784,220.55 × 353,431.98
  4. Step 4: Simplify right side
    568,297.98x = 277,168,621,743.19
  5. Step 5: Solve for x
    x = 277,168,621,743.19/568,297.98
  6. Step 6: Final answer
    x = 487,717.06

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1.5x scale

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.