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Finding the Fourth Proportional to 77,512.83, 106,969.05 and 43,523.21

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Solution

The fourth proportional to 77,512.83, 106,969.05 and 43,523.21 is: 60,062.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,512.83 : 106,969.05 = 43,523.21 : x
  2. Step 2: Convert to fraction form
    77,512.83/106,969.05 = 43,523.21/x
  3. Step 3: Cross multiply
    77,512.83x = 106,969.05 × 43,523.21
  4. Step 4: Simplify right side
    77,512.83x = 4,655,635,891.81
  5. Step 5: Solve for x
    x = 4,655,635,891.81/77,512.83
  6. Step 6: Final answer
    x = 60,062.78

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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.