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Finding the Fourth Proportional to 17,200.70, 25,804.65 and 5,515.10

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Solution

The fourth proportional to 17,200.70, 25,804.65 and 5,515.10 is: 8,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,200.70 : 25,804.65 = 5,515.10 : x
  2. Step 2: Convert to fraction form
    17,200.70/25,804.65 = 5,515.10/x
  3. Step 3: Cross multiply
    17,200.70x = 25,804.65 × 5,515.10
  4. Step 4: Simplify right side
    17,200.70x = 142,315,225.22
  5. Step 5: Solve for x
    x = 142,315,225.22/17,200.70
  6. Step 6: Final answer
    x = 8,273.80

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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.