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Finding the Fourth Proportional to 17,609.76, 26,419.04 and 12,425.76

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Solution

The fourth proportional to 17,609.76, 26,419.04 and 12,425.76 is: 18,641.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,609.76 : 26,419.04 = 12,425.76 : x
  2. Step 2: Convert to fraction form
    17,609.76/26,419.04 = 12,425.76/x
  3. Step 3: Cross multiply
    17,609.76x = 26,419.04 × 12,425.76
  4. Step 4: Simplify right side
    17,609.76x = 328,276,650.47
  5. Step 5: Solve for x
    x = 328,276,650.47/17,609.76
  6. Step 6: Final answer
    x = 18,641.74

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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.