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Finding the Fourth Proportional to 2,940.64, 4,409.60 and 1,708.41

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Solution

The fourth proportional to 2,940.64, 4,409.60 and 1,708.41 is: 2,561.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.64 : 4,409.60 = 1,708.41 : x
  2. Step 2: Convert to fraction form
    2,940.64/4,409.60 = 1,708.41/x
  3. Step 3: Cross multiply
    2,940.64x = 4,409.60 × 1,708.41
  4. Step 4: Simplify right side
    2,940.64x = 7,533,404.74
  5. Step 5: Solve for x
    x = 7,533,404.74/2,940.64
  6. Step 6: Final answer
    x = 2,561.82

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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.