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Finding the Fourth Proportional to 69,081.47, 103,622.20 and 45,702.44

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Solution

The fourth proportional to 69,081.47, 103,622.20 and 45,702.44 is: 68,553.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,081.47 : 103,622.20 = 45,702.44 : x
  2. Step 2: Convert to fraction form
    69,081.47/103,622.20 = 45,702.44/x
  3. Step 3: Cross multiply
    69,081.47x = 103,622.20 × 45,702.44
  4. Step 4: Simplify right side
    69,081.47x = 4,735,787,378.17
  5. Step 5: Solve for x
    x = 4,735,787,378.17/69,081.47
  6. Step 6: Final answer
    x = 68,553.66

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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.