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Finding the Fourth Proportional to 154,245.87, 212,862.20 and 93,819.06

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Solution

The fourth proportional to 154,245.87, 212,862.20 and 93,819.06 is: 129,472.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,245.87 : 212,862.20 = 93,819.06 : x
  2. Step 2: Convert to fraction form
    154,245.87/212,862.20 = 93,819.06/x
  3. Step 3: Cross multiply
    154,245.87x = 212,862.20 × 93,819.06
  4. Step 4: Simplify right side
    154,245.87x = 19,970,531,044.44
  5. Step 5: Solve for x
    x = 19,970,531,044.44/154,245.87
  6. Step 6: Final answer
    x = 129,472.06

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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.