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Finding the Fourth Proportional to 6,886.16, 9,502.70 and 3,902.96

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Solution

The fourth proportional to 6,886.16, 9,502.70 and 3,902.96 is: 5,385.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,886.16 : 9,502.70 = 3,902.96 : x
  2. Step 2: Convert to fraction form
    6,886.16/9,502.70 = 3,902.96/x
  3. Step 3: Cross multiply
    6,886.16x = 9,502.70 × 3,902.96
  4. Step 4: Simplify right side
    6,886.16x = 37,088,600.72
  5. Step 5: Solve for x
    x = 37,088,600.72/6,886.16
  6. Step 6: Final answer
    x = 5,385.97

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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.