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Finding the Fourth Proportional to 2,336.64, 3,505.62 and 693.18

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Solution

The fourth proportional to 2,336.64, 3,505.62 and 693.18 is: 1,039.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,336.64 : 3,505.62 = 693.18 : x
  2. Step 2: Convert to fraction form
    2,336.64/3,505.62 = 693.18/x
  3. Step 3: Cross multiply
    2,336.64x = 3,505.62 × 693.18
  4. Step 4: Simplify right side
    2,336.64x = 2,430,025.67
  5. Step 5: Solve for x
    x = 2,430,025.67/2,336.64
  6. Step 6: Final answer
    x = 1,039.97

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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.