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Finding the Fourth Proportional to 115,371.40, 173,057.10 and 85,846.90

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Solution

The fourth proportional to 115,371.40, 173,057.10 and 85,846.90 is: 128,770.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,371.40 : 173,057.10 = 85,846.90 : x
  2. Step 2: Convert to fraction form
    115,371.40/173,057.10 = 85,846.90/x
  3. Step 3: Cross multiply
    115,371.40x = 173,057.10 × 85,846.90
  4. Step 4: Simplify right side
    115,371.40x = 14,856,415,557.99
  5. Step 5: Solve for x
    x = 14,856,415,557.99/115,371.40
  6. Step 6: Final answer
    x = 128,770.35

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Similar ratio
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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.