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Finding the Fourth Proportional to 622,808.39, 933,486.78 and 285,884.64

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Solution

The fourth proportional to 622,808.39, 933,486.78 and 285,884.64 is: 428,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,808.39 : 933,486.78 = 285,884.64 : x
  2. Step 2: Convert to fraction form
    622,808.39/933,486.78 = 285,884.64/x
  3. Step 3: Cross multiply
    622,808.39x = 933,486.78 × 285,884.64
  4. Step 4: Simplify right side
    622,808.39x = 266,869,531,509.03
  5. Step 5: Solve for x
    x = 266,869,531,509.03/622,808.39
  6. Step 6: Final answer
    x = 428,493.79

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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.