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Finding the Fourth Proportional to 7,872.94, 10,864.24 and 4,335.48

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Solution

The fourth proportional to 7,872.94, 10,864.24 and 4,335.48 is: 5,982.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.94 : 10,864.24 = 4,335.48 : x
  2. Step 2: Convert to fraction form
    7,872.94/10,864.24 = 4,335.48/x
  3. Step 3: Cross multiply
    7,872.94x = 10,864.24 × 4,335.48
  4. Step 4: Simplify right side
    7,872.94x = 47,101,695.24
  5. Step 5: Solve for x
    x = 47,101,695.24/7,872.94
  6. Step 6: Final answer
    x = 5,982.73

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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.