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Finding the Fourth Proportional to 330,793.29, 495,730.26 and 172,706.40

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Solution

The fourth proportional to 330,793.29, 495,730.26 and 172,706.40 is: 258,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,793.29 : 495,730.26 = 172,706.40 : x
  2. Step 2: Convert to fraction form
    330,793.29/495,730.26 = 172,706.40/x
  3. Step 3: Cross multiply
    330,793.29x = 495,730.26 × 172,706.40
  4. Step 4: Simplify right side
    330,793.29x = 85,615,788,575.66
  5. Step 5: Solve for x
    x = 85,615,788,575.66/330,793.29
  6. Step 6: Final answer
    x = 258,819.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.