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Finding the Fourth Proportional to 447,427.28, 617,449.75 and 246,223.28

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Solution

The fourth proportional to 447,427.28, 617,449.75 and 246,223.28 is: 339,788.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,427.28 : 617,449.75 = 246,223.28 : x
  2. Step 2: Convert to fraction form
    447,427.28/617,449.75 = 246,223.28/x
  3. Step 3: Cross multiply
    447,427.28x = 617,449.75 × 246,223.28
  4. Step 4: Simplify right side
    447,427.28x = 152,030,502,680.18
  5. Step 5: Solve for x
    x = 152,030,502,680.18/447,427.28
  6. Step 6: Final answer
    x = 339,788.18

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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.