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Finding the Fourth Proportional to 4,612.55, 6,917.45 and 1,690.16

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Solution

The fourth proportional to 4,612.55, 6,917.45 and 1,690.16 is: 2,534.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,612.55 : 6,917.45 = 1,690.16 : x
  2. Step 2: Convert to fraction form
    4,612.55/6,917.45 = 1,690.16/x
  3. Step 3: Cross multiply
    4,612.55x = 6,917.45 × 1,690.16
  4. Step 4: Simplify right side
    4,612.55x = 11,691,554.25
  5. Step 5: Solve for x
    x = 11,691,554.25/4,612.55
  6. Step 6: Final answer
    x = 2,534.73

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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.