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Finding the Fourth Proportional to 123,381.93, 170,267.61 and 66,793.32

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Solution

The fourth proportional to 123,381.93, 170,267.61 and 66,793.32 is: 92,175.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,381.93 : 170,267.61 = 66,793.32 : x
  2. Step 2: Convert to fraction form
    123,381.93/170,267.61 = 66,793.32/x
  3. Step 3: Cross multiply
    123,381.93x = 170,267.61 × 66,793.32
  4. Step 4: Simplify right side
    123,381.93x = 11,372,738,960.37
  5. Step 5: Solve for x
    x = 11,372,738,960.37/123,381.93
  6. Step 6: Final answer
    x = 92,175.08

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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.