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Finding the Fourth Proportional to 348,101.70, 522,176.85 and 137,712.30

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Solution

The fourth proportional to 348,101.70, 522,176.85 and 137,712.30 is: 206,578.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,101.70 : 522,176.85 = 137,712.30 : x
  2. Step 2: Convert to fraction form
    348,101.70/522,176.85 = 137,712.30/x
  3. Step 3: Cross multiply
    348,101.70x = 522,176.85 × 137,712.30
  4. Step 4: Simplify right side
    348,101.70x = 71,910,175,020.26
  5. Step 5: Solve for x
    x = 71,910,175,020.26/348,101.70
  6. Step 6: Final answer
    x = 206,578.06

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1.5x scale

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.