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Finding the Fourth Proportional to 384,340.39, 530,454.63 and 223,288.85

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Solution

The fourth proportional to 384,340.39, 530,454.63 and 223,288.85 is: 308,176.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,340.39 : 530,454.63 = 223,288.85 : x
  2. Step 2: Convert to fraction form
    384,340.39/530,454.63 = 223,288.85/x
  3. Step 3: Cross multiply
    384,340.39x = 530,454.63 × 223,288.85
  4. Step 4: Simplify right side
    384,340.39x = 118,444,604,309.88
  5. Step 5: Solve for x
    x = 118,444,604,309.88/384,340.39
  6. Step 6: Final answer
    x = 308,176.31

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1.5x scale

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.