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Finding the Fourth Proportional to 186,140.85, 279,211.28 and 73,847.85

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Solution

The fourth proportional to 186,140.85, 279,211.28 and 73,847.85 is: 110,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,140.85 : 279,211.28 = 73,847.85 : x
  2. Step 2: Convert to fraction form
    186,140.85/279,211.28 = 73,847.85/x
  3. Step 3: Cross multiply
    186,140.85x = 279,211.28 × 73,847.85
  4. Step 4: Simplify right side
    186,140.85x = 20,619,152,354.51
  5. Step 5: Solve for x
    x = 20,619,152,354.51/186,140.85
  6. Step 6: Final answer
    x = 110,771.78

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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.