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Finding the Fourth Proportional to 110,183.40, 165,428.70 and 68,711.40

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Solution

The fourth proportional to 110,183.40, 165,428.70 and 68,711.40 is: 103,162.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,183.40 : 165,428.70 = 68,711.40 : x
  2. Step 2: Convert to fraction form
    110,183.40/165,428.70 = 68,711.40/x
  3. Step 3: Cross multiply
    110,183.40x = 165,428.70 × 68,711.40
  4. Step 4: Simplify right side
    110,183.40x = 11,366,837,577.18
  5. Step 5: Solve for x
    x = 11,366,837,577.18/110,183.40
  6. Step 6: Final answer
    x = 103,162.89

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1.5x scale

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.