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Finding the Fourth Proportional to 445,660.32, 668,762.64 and 193,008.36

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Solution

The fourth proportional to 445,660.32, 668,762.64 and 193,008.36 is: 289,630.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,660.32 : 668,762.64 = 193,008.36 : x
  2. Step 2: Convert to fraction form
    445,660.32/668,762.64 = 193,008.36/x
  3. Step 3: Cross multiply
    445,660.32x = 668,762.64 × 193,008.36
  4. Step 4: Simplify right side
    445,660.32x = 129,076,780,375.67
  5. Step 5: Solve for x
    x = 129,076,780,375.67/445,660.32
  6. Step 6: Final answer
    x = 289,630.41

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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.