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Finding the Fourth Proportional to 95,910.40, 143,930.40 and 53,790.40

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Solution

The fourth proportional to 95,910.40, 143,930.40 and 53,790.40 is: 80,721.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,910.40 : 143,930.40 = 53,790.40 : x
  2. Step 2: Convert to fraction form
    95,910.40/143,930.40 = 53,790.40/x
  3. Step 3: Cross multiply
    95,910.40x = 143,930.40 × 53,790.40
  4. Step 4: Simplify right side
    95,910.40x = 7,742,073,788.16
  5. Step 5: Solve for x
    x = 7,742,073,788.16/95,910.40
  6. Step 6: Final answer
    x = 80,721.94

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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.