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Finding the Fourth Proportional to 384,591.15, 530,563.41 and 223,358.85

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Solution

The fourth proportional to 384,591.15, 530,563.41 and 223,358.85 is: 308,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,591.15 : 530,563.41 = 223,358.85 : x
  2. Step 2: Convert to fraction form
    384,591.15/530,563.41 = 223,358.85/x
  3. Step 3: Cross multiply
    384,591.15x = 530,563.41 × 223,358.85
  4. Step 4: Simplify right side
    384,591.15x = 118,506,033,109.68
  5. Step 5: Solve for x
    x = 118,506,033,109.68/384,591.15
  6. Step 6: Final answer
    x = 308,135.10

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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.