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Finding the Fourth Proportional to 262,714.88, 393,970.56 and 85,179.20

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Solution

The fourth proportional to 262,714.88, 393,970.56 and 85,179.20 is: 127,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,714.88 : 393,970.56 = 85,179.20 : x
  2. Step 2: Convert to fraction form
    262,714.88/393,970.56 = 85,179.20/x
  3. Step 3: Cross multiply
    262,714.88x = 393,970.56 × 85,179.20
  4. Step 4: Simplify right side
    262,714.88x = 33,558,097,124.35
  5. Step 5: Solve for x
    x = 33,558,097,124.35/262,714.88
  6. Step 6: Final answer
    x = 127,735.81

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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.