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Finding the Fourth Proportional to 8,461.75, 11,676.92 and 4,685.08

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Solution

The fourth proportional to 8,461.75, 11,676.92 and 4,685.08 is: 6,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461.75 : 11,676.92 = 4,685.08 : x
  2. Step 2: Convert to fraction form
    8,461.75/11,676.92 = 4,685.08/x
  3. Step 3: Cross multiply
    8,461.75x = 11,676.92 × 4,685.08
  4. Step 4: Simplify right side
    8,461.75x = 54,707,304.35
  5. Step 5: Solve for x
    x = 54,707,304.35/8,461.75
  6. Step 6: Final answer
    x = 6,465.25

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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.