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Finding the Fourth Proportional to 75,706.80, 104,485.44 and 43,454.16

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Solution

The fourth proportional to 75,706.80, 104,485.44 and 43,454.16 is: 59,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,706.80 : 104,485.44 = 43,454.16 : x
  2. Step 2: Convert to fraction form
    75,706.80/104,485.44 = 43,454.16/x
  3. Step 3: Cross multiply
    75,706.80x = 104,485.44 × 43,454.16
  4. Step 4: Simplify right side
    75,706.80x = 4,540,327,027.43
  5. Step 5: Solve for x
    x = 4,540,327,027.43/75,706.80
  6. Step 6: Final answer
    x = 59,972.51

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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.