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Finding the Fourth Proportional to 83,361.92, 115,016.64 and 53,571.20

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Solution

The fourth proportional to 83,361.92, 115,016.64 and 53,571.20 is: 73,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,361.92 : 115,016.64 = 53,571.20 : x
  2. Step 2: Convert to fraction form
    83,361.92/115,016.64 = 53,571.20/x
  3. Step 3: Cross multiply
    83,361.92x = 115,016.64 × 53,571.20
  4. Step 4: Simplify right side
    83,361.92x = 6,161,579,424.77
  5. Step 5: Solve for x
    x = 6,161,579,424.77/83,361.92
  6. Step 6: Final answer
    x = 73,913.60

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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.