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Finding the Fourth Proportional to 262,185, 393,278.94 and 65,193

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Solution

The fourth proportional to 262,185, 393,278.94 and 65,193 is: 97,789.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,185 : 393,278.94 = 65,193 : x
  2. Step 2: Convert to fraction form
    262,185/393,278.94 = 65,193/x
  3. Step 3: Cross multiply
    262,185x = 393,278.94 × 65,193
  4. Step 4: Simplify right side
    262,185x = 25,639,033,935.42
  5. Step 5: Solve for x
    x = 25,639,033,935.42/262,185
  6. Step 6: Final answer
    x = 97,789.86

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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.