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Finding the Fourth Proportional to 209,683.40, 313,910.70 and 185,107.40

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Solution

The fourth proportional to 209,683.40, 313,910.70 and 185,107.40 is: 277,118.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,683.40 : 313,910.70 = 185,107.40 : x
  2. Step 2: Convert to fraction form
    209,683.40/313,910.70 = 185,107.40/x
  3. Step 3: Cross multiply
    209,683.40x = 313,910.70 × 185,107.40
  4. Step 4: Simplify right side
    209,683.40x = 58,107,193,509.18
  5. Step 5: Solve for x
    x = 58,107,193,509.18/209,683.40
  6. Step 6: Final answer
    x = 277,118.71

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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.