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Finding the Fourth Proportional to 654,452.40, 982,600.20 and 405,620.40

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Solution

The fourth proportional to 654,452.40, 982,600.20 and 405,620.40 is: 609,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,452.40 : 982,600.20 = 405,620.40 : x
  2. Step 2: Convert to fraction form
    654,452.40/982,600.20 = 405,620.40/x
  3. Step 3: Cross multiply
    654,452.40x = 982,600.20 × 405,620.40
  4. Step 4: Simplify right side
    654,452.40x = 398,562,686,164.08
  5. Step 5: Solve for x
    x = 398,562,686,164.08/654,452.40
  6. Step 6: Final answer
    x = 609,001.79

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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.