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Finding the Fourth Proportional to 17,072.40, 23,559.60 and 9,620.40

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Solution

The fourth proportional to 17,072.40, 23,559.60 and 9,620.40 is: 13,275.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,072.40 : 23,559.60 = 9,620.40 : x
  2. Step 2: Convert to fraction form
    17,072.40/23,559.60 = 9,620.40/x
  3. Step 3: Cross multiply
    17,072.40x = 23,559.60 × 9,620.40
  4. Step 4: Simplify right side
    17,072.40x = 226,652,775.84
  5. Step 5: Solve for x
    x = 226,652,775.84/17,072.40
  6. Step 6: Final answer
    x = 13,275.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.