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Finding the Fourth Proportional to 123,603.92, 170,573.78 and 67,015.32

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Solution

The fourth proportional to 123,603.92, 170,573.78 and 67,015.32 is: 92,481.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,603.92 : 170,573.78 = 67,015.32 : x
  2. Step 2: Convert to fraction form
    123,603.92/170,573.78 = 67,015.32/x
  3. Step 3: Cross multiply
    123,603.92x = 170,573.78 × 67,015.32
  4. Step 4: Simplify right side
    123,603.92x = 11,431,056,450.31
  5. Step 5: Solve for x
    x = 11,431,056,450.31/123,603.92
  6. Step 6: Final answer
    x = 92,481.34

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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.