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Finding the Fourth Proportional to 186,863.54, 280,122.63 and 74,516.45

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Solution

The fourth proportional to 186,863.54, 280,122.63 and 74,516.45 is: 111,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,863.54 : 280,122.63 = 74,516.45 : x
  2. Step 2: Convert to fraction form
    186,863.54/280,122.63 = 74,516.45/x
  3. Step 3: Cross multiply
    186,863.54x = 280,122.63 × 74,516.45
  4. Step 4: Simplify right side
    186,863.54x = 20,873,742,551.65
  5. Step 5: Solve for x
    x = 20,873,742,551.65/186,863.54
  6. Step 6: Final answer
    x = 111,705.81

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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.