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Finding the Fourth Proportional to 404,171.60, 605,220.60 and 385,509.20

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Solution

The fourth proportional to 404,171.60, 605,220.60 and 385,509.20 is: 577,274.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,171.60 : 605,220.60 = 385,509.20 : x
  2. Step 2: Convert to fraction form
    404,171.60/605,220.60 = 385,509.20/x
  3. Step 3: Cross multiply
    404,171.60x = 605,220.60 × 385,509.20
  4. Step 4: Simplify right side
    404,171.60x = 233,318,109,329.52
  5. Step 5: Solve for x
    x = 233,318,109,329.52/404,171.60
  6. Step 6: Final answer
    x = 577,274.87

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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.