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Finding the Fourth Proportional to 403,907.40, 605,861.10 and 246,443.40

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Solution

The fourth proportional to 403,907.40, 605,861.10 and 246,443.40 is: 369,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,907.40 : 605,861.10 = 246,443.40 : x
  2. Step 2: Convert to fraction form
    403,907.40/605,861.10 = 246,443.40/x
  3. Step 3: Cross multiply
    403,907.40x = 605,861.10 × 246,443.40
  4. Step 4: Simplify right side
    403,907.40x = 149,310,469,411.74
  5. Step 5: Solve for x
    x = 149,310,469,411.74/403,907.40
  6. Step 6: Final answer
    x = 369,665.10

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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.