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Finding the Fourth Proportional to 289,207.54, 399,103.63 and 166,654.90

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Solution

The fourth proportional to 289,207.54, 399,103.63 and 166,654.90 is: 229,982.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,207.54 : 399,103.63 = 166,654.90 : x
  2. Step 2: Convert to fraction form
    289,207.54/399,103.63 = 166,654.90/x
  3. Step 3: Cross multiply
    289,207.54x = 399,103.63 × 166,654.90
  4. Step 4: Simplify right side
    289,207.54x = 66,512,573,384.57
  5. Step 5: Solve for x
    x = 66,512,573,384.57/289,207.54
  6. Step 6: Final answer
    x = 229,982.15

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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.