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Finding the Fourth Proportional to 217,568.72, 326,355.32 and 65,767.05

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Solution

The fourth proportional to 217,568.72, 326,355.32 and 65,767.05 is: 98,651.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,568.72 : 326,355.32 = 65,767.05 : x
  2. Step 2: Convert to fraction form
    217,568.72/326,355.32 = 65,767.05/x
  3. Step 3: Cross multiply
    217,568.72x = 326,355.32 × 65,767.05
  4. Step 4: Simplify right side
    217,568.72x = 21,463,426,812.62
  5. Step 5: Solve for x
    x = 21,463,426,812.62/217,568.72
  6. Step 6: Final answer
    x = 98,651.25

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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.