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Finding the Fourth Proportional to 76,701.20, 105,847.44 and 43,167.20

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Solution

The fourth proportional to 76,701.20, 105,847.44 and 43,167.20 is: 59,570.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,701.20 : 105,847.44 = 43,167.20 : x
  2. Step 2: Convert to fraction form
    76,701.20/105,847.44 = 43,167.20/x
  3. Step 3: Cross multiply
    76,701.20x = 105,847.44 × 43,167.20
  4. Step 4: Simplify right side
    76,701.20x = 4,569,137,611.97
  5. Step 5: Solve for x
    x = 4,569,137,611.97/76,701.20
  6. Step 6: Final answer
    x = 59,570.61

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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.