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Finding the Fourth Proportional to 536,621.87, 805,301.87 and 221,078.78

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Solution

The fourth proportional to 536,621.87, 805,301.87 and 221,078.78 is: 331,770.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,621.87 : 805,301.87 = 221,078.78 : x
  2. Step 2: Convert to fraction form
    536,621.87/805,301.87 = 221,078.78/x
  3. Step 3: Cross multiply
    536,621.87x = 805,301.87 × 221,078.78
  4. Step 4: Simplify right side
    536,621.87x = 178,035,152,839.30
  5. Step 5: Solve for x
    x = 178,035,152,839.30/536,621.87
  6. Step 6: Final answer
    x = 331,770.21

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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.