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Finding the Fourth Proportional to 7,873.73, 10,865.35 and 5,079.23

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Solution

The fourth proportional to 7,873.73, 10,865.35 and 5,079.23 is: 7,009.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.73 : 10,865.35 = 5,079.23 : x
  2. Step 2: Convert to fraction form
    7,873.73/10,865.35 = 5,079.23/x
  3. Step 3: Cross multiply
    7,873.73x = 10,865.35 × 5,079.23
  4. Step 4: Simplify right side
    7,873.73x = 55,187,611.68
  5. Step 5: Solve for x
    x = 55,187,611.68/7,873.73
  6. Step 6: Final answer
    x = 7,009.08

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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.