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Finding the Fourth Proportional to 605,899.20, 908,411.40 and 395,655.60

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Solution

The fourth proportional to 605,899.20, 908,411.40 and 395,655.60 is: 593,197.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,899.20 : 908,411.40 = 395,655.60 : x
  2. Step 2: Convert to fraction form
    605,899.20/908,411.40 = 395,655.60/x
  3. Step 3: Cross multiply
    605,899.20x = 908,411.40 × 395,655.60
  4. Step 4: Simplify right side
    605,899.20x = 359,418,057,513.84
  5. Step 5: Solve for x
    x = 359,418,057,513.84/605,899.20
  6. Step 6: Final answer
    x = 593,197.78

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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.