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Finding the Fourth Proportional to 17,649.18, 26,478.90 and 7,113.75

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Solution

The fourth proportional to 17,649.18, 26,478.90 and 7,113.75 is: 10,672.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,649.18 : 26,478.90 = 7,113.75 : x
  2. Step 2: Convert to fraction form
    17,649.18/26,478.90 = 7,113.75/x
  3. Step 3: Cross multiply
    17,649.18x = 26,478.90 × 7,113.75
  4. Step 4: Simplify right side
    17,649.18x = 188,364,274.88
  5. Step 5: Solve for x
    x = 188,364,274.88/17,649.18
  6. Step 6: Final answer
    x = 10,672.69

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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.