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Finding the Fourth Proportional to 45,635.70, 68,441.40 and 14,045.70

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Solution

The fourth proportional to 45,635.70, 68,441.40 and 14,045.70 is: 21,064.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,635.70 : 68,441.40 = 14,045.70 : x
  2. Step 2: Convert to fraction form
    45,635.70/68,441.40 = 14,045.70/x
  3. Step 3: Cross multiply
    45,635.70x = 68,441.40 × 14,045.70
  4. Step 4: Simplify right side
    45,635.70x = 961,307,371.98
  5. Step 5: Solve for x
    x = 961,307,371.98/45,635.70
  6. Step 6: Final answer
    x = 21,064.81

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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.