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Finding the Fourth Proportional to 283,899.62, 425,892.12 and 91,709.91

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Solution

The fourth proportional to 283,899.62, 425,892.12 and 91,709.91 is: 137,578.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,899.62 : 425,892.12 = 91,709.91 : x
  2. Step 2: Convert to fraction form
    283,899.62/425,892.12 = 91,709.91/x
  3. Step 3: Cross multiply
    283,899.62x = 425,892.12 × 91,709.91
  4. Step 4: Simplify right side
    283,899.62x = 39,058,527,994.91
  5. Step 5: Solve for x
    x = 39,058,527,994.91/283,899.62
  6. Step 6: Final answer
    x = 137,578.66

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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.