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Finding the Fourth Proportional to 665,571.44, 919,246.28 and 447,401.32

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Solution

The fourth proportional to 665,571.44, 919,246.28 and 447,401.32 is: 617,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,571.44 : 919,246.28 = 447,401.32 : x
  2. Step 2: Convert to fraction form
    665,571.44/919,246.28 = 447,401.32/x
  3. Step 3: Cross multiply
    665,571.44x = 919,246.28 × 447,401.32
  4. Step 4: Simplify right side
    665,571.44x = 411,271,999,077.09
  5. Step 5: Solve for x
    x = 411,271,999,077.09/665,571.44
  6. Step 6: Final answer
    x = 617,923.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.