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Finding the Fourth Proportional to 2,095.73, 3,142.40 and 862.13

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Solution

The fourth proportional to 2,095.73, 3,142.40 and 862.13 is: 1,292.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,095.73 : 3,142.40 = 862.13 : x
  2. Step 2: Convert to fraction form
    2,095.73/3,142.40 = 862.13/x
  3. Step 3: Cross multiply
    2,095.73x = 3,142.40 × 862.13
  4. Step 4: Simplify right side
    2,095.73x = 2,709,137.29
  5. Step 5: Solve for x
    x = 2,709,137.29/2,095.73
  6. Step 6: Final answer
    x = 1,292.69

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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.