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Finding the Fourth Proportional to 605,998.80, 908,998.20 and 353,564.33

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Solution

The fourth proportional to 605,998.80, 908,998.20 and 353,564.33 is: 530,346.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,998.80 : 908,998.20 = 353,564.33 : x
  2. Step 2: Convert to fraction form
    605,998.80/908,998.20 = 353,564.33/x
  3. Step 3: Cross multiply
    605,998.80x = 908,998.20 × 353,564.33
  4. Step 4: Simplify right side
    605,998.80x = 321,389,335,009.22
  5. Step 5: Solve for x
    x = 321,389,335,009.22/605,998.80
  6. Step 6: Final answer
    x = 530,346.49

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Double scale
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Similar ratio
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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.