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Finding the Fourth Proportional to 120,696.70, 166,522.92 and 69,702.70

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Solution

The fourth proportional to 120,696.70, 166,522.92 and 69,702.70 is: 96,167.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,696.70 : 166,522.92 = 69,702.70 : x
  2. Step 2: Convert to fraction form
    120,696.70/166,522.92 = 69,702.70/x
  3. Step 3: Cross multiply
    120,696.70x = 166,522.92 × 69,702.70
  4. Step 4: Simplify right side
    120,696.70x = 11,607,097,135.88
  5. Step 5: Solve for x
    x = 11,607,097,135.88/120,696.70
  6. Step 6: Final answer
    x = 96,167.48

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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.