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Finding the Fourth Proportional to 458,161.03, 630,020.18 and 397,626.58

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Solution

The fourth proportional to 458,161.03, 630,020.18 and 397,626.58 is: 546,778.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,161.03 : 630,020.18 = 397,626.58 : x
  2. Step 2: Convert to fraction form
    458,161.03/630,020.18 = 397,626.58/x
  3. Step 3: Cross multiply
    458,161.03x = 630,020.18 × 397,626.58
  4. Step 4: Simplify right side
    458,161.03x = 250,512,769,504.38
  5. Step 5: Solve for x
    x = 250,512,769,504.38/458,161.03
  6. Step 6: Final answer
    x = 546,778.87

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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.