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Finding the Fourth Proportional to 17,615.80, 26,423.70 and 8,867.80

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Solution

The fourth proportional to 17,615.80, 26,423.70 and 8,867.80 is: 13,301.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,615.80 : 26,423.70 = 8,867.80 : x
  2. Step 2: Convert to fraction form
    17,615.80/26,423.70 = 8,867.80/x
  3. Step 3: Cross multiply
    17,615.80x = 26,423.70 × 8,867.80
  4. Step 4: Simplify right side
    17,615.80x = 234,320,086.86
  5. Step 5: Solve for x
    x = 234,320,086.86/17,615.80
  6. Step 6: Final answer
    x = 13,301.70

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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.