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Finding the Fourth Proportional to 66,989.52, 92,450.21 and 44,289.05

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Solution

The fourth proportional to 66,989.52, 92,450.21 and 44,289.05 is: 61,121.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,989.52 : 92,450.21 = 44,289.05 : x
  2. Step 2: Convert to fraction form
    66,989.52/92,450.21 = 44,289.05/x
  3. Step 3: Cross multiply
    66,989.52x = 92,450.21 × 44,289.05
  4. Step 4: Simplify right side
    66,989.52x = 4,094,531,289.50
  5. Step 5: Solve for x
    x = 4,094,531,289.50/66,989.52
  6. Step 6: Final answer
    x = 61,121.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.