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Finding the Fourth Proportional to 548,448.64, 822,589.49 and 211,440.11

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Solution

The fourth proportional to 548,448.64, 822,589.49 and 211,440.11 is: 317,127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,448.64 : 822,589.49 = 211,440.11 : x
  2. Step 2: Convert to fraction form
    548,448.64/822,589.49 = 211,440.11/x
  3. Step 3: Cross multiply
    548,448.64x = 822,589.49 × 211,440.11
  4. Step 4: Simplify right side
    548,448.64x = 173,928,408,666.10
  5. Step 5: Solve for x
    x = 173,928,408,666.10/548,448.64
  6. Step 6: Final answer
    x = 317,127.98

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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.