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Finding the Fourth Proportional to 6,792.10, 9,379.50 and 6,423.94

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Solution

The fourth proportional to 6,792.10, 9,379.50 and 6,423.94 is: 8,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,792.10 : 9,379.50 = 6,423.94 : x
  2. Step 2: Convert to fraction form
    6,792.10/9,379.50 = 6,423.94/x
  3. Step 3: Cross multiply
    6,792.10x = 9,379.50 × 6,423.94
  4. Step 4: Simplify right side
    6,792.10x = 60,253,345.23
  5. Step 5: Solve for x
    x = 60,253,345.23/6,792.10
  6. Step 6: Final answer
    x = 8,871.09

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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.