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Finding the Fourth Proportional to 209,353.78, 288,806.52 and 124,410.70

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Solution

The fourth proportional to 209,353.78, 288,806.52 and 124,410.70 is: 171,626.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,353.78 : 288,806.52 = 124,410.70 : x
  2. Step 2: Convert to fraction form
    209,353.78/288,806.52 = 124,410.70/x
  3. Step 3: Cross multiply
    209,353.78x = 288,806.52 × 124,410.70
  4. Step 4: Simplify right side
    209,353.78x = 35,930,621,317.76
  5. Step 5: Solve for x
    x = 35,930,621,317.76/209,353.78
  6. Step 6: Final answer
    x = 171,626.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.