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Finding the Fourth Proportional to 121,106.79, 181,639.22 and 36,846.54

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Solution

The fourth proportional to 121,106.79, 181,639.22 and 36,846.54 is: 55,263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,106.79 : 181,639.22 = 36,846.54 : x
  2. Step 2: Convert to fraction form
    121,106.79/181,639.22 = 36,846.54/x
  3. Step 3: Cross multiply
    121,106.79x = 181,639.22 × 36,846.54
  4. Step 4: Simplify right side
    121,106.79x = 6,692,776,785.30
  5. Step 5: Solve for x
    x = 6,692,776,785.30/121,106.79
  6. Step 6: Final answer
    x = 55,263.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.