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Finding the Fourth Proportional to 8,482.56, 12,703.73 and 6,721.91

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Solution

The fourth proportional to 8,482.56, 12,703.73 and 6,721.91 is: 10,066.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.56 : 12,703.73 = 6,721.91 : x
  2. Step 2: Convert to fraction form
    8,482.56/12,703.73 = 6,721.91/x
  3. Step 3: Cross multiply
    8,482.56x = 12,703.73 × 6,721.91
  4. Step 4: Simplify right side
    8,482.56x = 85,393,329.72
  5. Step 5: Solve for x
    x = 85,393,329.72/8,482.56
  6. Step 6: Final answer
    x = 10,066.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.