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Finding the Fourth Proportional to 163,641.32, 225,823.59 and 92,019.81

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Solution

The fourth proportional to 163,641.32, 225,823.59 and 92,019.81 is: 126,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,641.32 : 225,823.59 = 92,019.81 : x
  2. Step 2: Convert to fraction form
    163,641.32/225,823.59 = 92,019.81/x
  3. Step 3: Cross multiply
    163,641.32x = 225,823.59 × 92,019.81
  4. Step 4: Simplify right side
    163,641.32x = 20,780,243,845.32
  5. Step 5: Solve for x
    x = 20,780,243,845.32/163,641.32
  6. Step 6: Final answer
    x = 126,986.54

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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.