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Finding the Fourth Proportional to 7,470.16, 11,195.16 and 2,850.64

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Solution

The fourth proportional to 7,470.16, 11,195.16 and 2,850.64 is: 4,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,470.16 : 11,195.16 = 2,850.64 : x
  2. Step 2: Convert to fraction form
    7,470.16/11,195.16 = 2,850.64/x
  3. Step 3: Cross multiply
    7,470.16x = 11,195.16 × 2,850.64
  4. Step 4: Simplify right side
    7,470.16x = 31,913,370.90
  5. Step 5: Solve for x
    x = 31,913,370.90/7,470.16
  6. Step 6: Final answer
    x = 4,272.11

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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.