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Finding the Fourth Proportional to 55,635.53, 76,789.62 and 43,512.12

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Solution

The fourth proportional to 55,635.53, 76,789.62 and 43,512.12 is: 60,056.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,635.53 : 76,789.62 = 43,512.12 : x
  2. Step 2: Convert to fraction form
    55,635.53/76,789.62 = 43,512.12/x
  3. Step 3: Cross multiply
    55,635.53x = 76,789.62 × 43,512.12
  4. Step 4: Simplify right side
    55,635.53x = 3,341,279,160.19
  5. Step 5: Solve for x
    x = 3,341,279,160.19/55,635.53
  6. Step 6: Final answer
    x = 60,056.58

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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.