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Finding the Fourth Proportional to 17,108.40, 23,609.28 and 9,656.40

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Solution

The fourth proportional to 17,108.40, 23,609.28 and 9,656.40 is: 13,325.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,108.40 : 23,609.28 = 9,656.40 : x
  2. Step 2: Convert to fraction form
    17,108.40/23,609.28 = 9,656.40/x
  3. Step 3: Cross multiply
    17,108.40x = 23,609.28 × 9,656.40
  4. Step 4: Simplify right side
    17,108.40x = 227,980,651.39
  5. Step 5: Solve for x
    x = 227,980,651.39/17,108.40
  6. Step 6: Final answer
    x = 13,325.66

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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.