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Finding the Fourth Proportional to 77,891.82, 107,493.92 and 43,901.74

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Solution

The fourth proportional to 77,891.82, 107,493.92 and 43,901.74 is: 60,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,891.82 : 107,493.92 = 43,901.74 : x
  2. Step 2: Convert to fraction form
    77,891.82/107,493.92 = 43,901.74/x
  3. Step 3: Cross multiply
    77,891.82x = 107,493.92 × 43,901.74
  4. Step 4: Simplify right side
    77,891.82x = 4,719,170,127.42
  5. Step 5: Solve for x
    x = 4,719,170,127.42/77,891.82
  6. Step 6: Final answer
    x = 60,586.21

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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.