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Finding the Fourth Proportional to 77,706.76, 107,241.55 and 43,713.22

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Solution

The fourth proportional to 77,706.76, 107,241.55 and 43,713.22 is: 60,327.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,706.76 : 107,241.55 = 43,713.22 : x
  2. Step 2: Convert to fraction form
    77,706.76/107,241.55 = 43,713.22/x
  3. Step 3: Cross multiply
    77,706.76x = 107,241.55 × 43,713.22
  4. Step 4: Simplify right side
    77,706.76x = 4,687,873,468.29
  5. Step 5: Solve for x
    x = 4,687,873,468.29/77,706.76
  6. Step 6: Final answer
    x = 60,327.74

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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.