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Finding the Fourth Proportional to 45,745.71, 68,611.56 and 12,468.45

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Solution

The fourth proportional to 45,745.71, 68,611.56 and 12,468.45 is: 18,700.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,745.71 : 68,611.56 = 12,468.45 : x
  2. Step 2: Convert to fraction form
    45,745.71/68,611.56 = 12,468.45/x
  3. Step 3: Cross multiply
    45,745.71x = 68,611.56 × 12,468.45
  4. Step 4: Simplify right side
    45,745.71x = 855,479,742.94
  5. Step 5: Solve for x
    x = 855,479,742.94/45,745.71
  6. Step 6: Final answer
    x = 18,700.77

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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.