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Finding the Fourth Proportional to 11,735.20, 17,609.20 and 4,810.40

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Solution

The fourth proportional to 11,735.20, 17,609.20 and 4,810.40 is: 7,218.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,735.20 : 17,609.20 = 4,810.40 : x
  2. Step 2: Convert to fraction form
    11,735.20/17,609.20 = 4,810.40/x
  3. Step 3: Cross multiply
    11,735.20x = 17,609.20 × 4,810.40
  4. Step 4: Simplify right side
    11,735.20x = 84,707,295.68
  5. Step 5: Solve for x
    x = 84,707,295.68/11,735.20
  6. Step 6: Final answer
    x = 7,218.22

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1.5x scale

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.