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Finding the Fourth Proportional to 209,695.78, 314,232.61 and 154,019.62

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Solution

The fourth proportional to 209,695.78, 314,232.61 and 154,019.62 is: 230,800.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,695.78 : 314,232.61 = 154,019.62 : x
  2. Step 2: Convert to fraction form
    209,695.78/314,232.61 = 154,019.62/x
  3. Step 3: Cross multiply
    209,695.78x = 314,232.61 × 154,019.62
  4. Step 4: Simplify right side
    209,695.78x = 48,397,987,183.81
  5. Step 5: Solve for x
    x = 48,397,987,183.81/209,695.78
  6. Step 6: Final answer
    x = 230,800.96

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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.