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Finding the Fourth Proportional to 8,696.72, 12,005.92 and 6,804.96

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Solution

The fourth proportional to 8,696.72, 12,005.92 and 6,804.96 is: 9,394.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.72 : 12,005.92 = 6,804.96 : x
  2. Step 2: Convert to fraction form
    8,696.72/12,005.92 = 6,804.96/x
  3. Step 3: Cross multiply
    8,696.72x = 12,005.92 × 6,804.96
  4. Step 4: Simplify right side
    8,696.72x = 81,699,805.36
  5. Step 5: Solve for x
    x = 81,699,805.36/8,696.72
  6. Step 6: Final answer
    x = 9,394.32

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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.