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Finding the Fourth Proportional to 404,165.60, 605,211.60 and 385,503.20

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Solution

The fourth proportional to 404,165.60, 605,211.60 and 385,503.20 is: 577,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,165.60 : 605,211.60 = 385,503.20 : x
  2. Step 2: Convert to fraction form
    404,165.60/605,211.60 = 385,503.20/x
  3. Step 3: Cross multiply
    404,165.60x = 605,211.60 × 385,503.20
  4. Step 4: Simplify right side
    404,165.60x = 233,311,008,477.12
  5. Step 5: Solve for x
    x = 233,311,008,477.12/404,165.60
  6. Step 6: Final answer
    x = 577,265.87

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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.