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Finding the Fourth Proportional to 397,386.54, 594,776.70 and 217,195.97

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Solution

The fourth proportional to 397,386.54, 594,776.70 and 217,195.97 is: 325,081.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,386.54 : 594,776.70 = 217,195.97 : x
  2. Step 2: Convert to fraction form
    397,386.54/594,776.70 = 217,195.97/x
  3. Step 3: Cross multiply
    397,386.54x = 594,776.70 × 217,195.97
  4. Step 4: Simplify right side
    397,386.54x = 129,183,099,316.02
  5. Step 5: Solve for x
    x = 129,183,099,316.02/397,386.54
  6. Step 6: Final answer
    x = 325,081.72

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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.