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Finding the Fourth Proportional to 11,792.76, 17,689.79 and 4,771.74

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Solution

The fourth proportional to 11,792.76, 17,689.79 and 4,771.74 is: 7,157.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,792.76 : 17,689.79 = 4,771.74 : x
  2. Step 2: Convert to fraction form
    11,792.76/17,689.79 = 4,771.74/x
  3. Step 3: Cross multiply
    11,792.76x = 17,689.79 × 4,771.74
  4. Step 4: Simplify right side
    11,792.76x = 84,411,007.54
  5. Step 5: Solve for x
    x = 84,411,007.54/11,792.76
  6. Step 6: Final answer
    x = 7,157.86

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1.5x scale

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.