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Finding the Fourth Proportional to 8,762.92, 12,090.90 and 5,930.74

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Solution

The fourth proportional to 8,762.92, 12,090.90 and 5,930.74 is: 8,183.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.92 : 12,090.90 = 5,930.74 : x
  2. Step 2: Convert to fraction form
    8,762.92/12,090.90 = 5,930.74/x
  3. Step 3: Cross multiply
    8,762.92x = 12,090.90 × 5,930.74
  4. Step 4: Simplify right side
    8,762.92x = 71,707,984.27
  5. Step 5: Solve for x
    x = 71,707,984.27/8,762.92
  6. Step 6: Final answer
    x = 8,183.12

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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.