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Finding the Fourth Proportional to 384,339.39, 530,453.25 and 223,287.85

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Solution

The fourth proportional to 384,339.39, 530,453.25 and 223,287.85 is: 308,174.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,339.39 : 530,453.25 = 223,287.85 : x
  2. Step 2: Convert to fraction form
    384,339.39/530,453.25 = 223,287.85/x
  3. Step 3: Cross multiply
    384,339.39x = 530,453.25 × 223,287.85
  4. Step 4: Simplify right side
    384,339.39x = 118,443,765,718.01
  5. Step 5: Solve for x
    x = 118,443,765,718.01/384,339.39
  6. Step 6: Final answer
    x = 308,174.93

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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.