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Finding the Fourth Proportional to 384,336.89, 530,449.80 and 223,285.35

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Solution

The fourth proportional to 384,336.89, 530,449.80 and 223,285.35 is: 308,171.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,336.89 : 530,449.80 = 223,285.35 : x
  2. Step 2: Convert to fraction form
    384,336.89/530,449.80 = 223,285.35/x
  3. Step 3: Cross multiply
    384,336.89x = 530,449.80 × 223,285.35
  4. Step 4: Simplify right side
    384,336.89x = 118,441,671,324.55
  5. Step 5: Solve for x
    x = 118,441,671,324.55/384,336.89
  6. Step 6: Final answer
    x = 308,171.49

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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.