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Finding the Fourth Proportional to 448,628.94, 672,839.67 and 133,009.74

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Solution

The fourth proportional to 448,628.94, 672,839.67 and 133,009.74 is: 199,483.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,628.94 : 672,839.67 = 133,009.74 : x
  2. Step 2: Convert to fraction form
    448,628.94/672,839.67 = 133,009.74/x
  3. Step 3: Cross multiply
    448,628.94x = 672,839.67 × 133,009.74
  4. Step 4: Simplify right side
    448,628.94x = 89,494,229,568.39
  5. Step 5: Solve for x
    x = 89,494,229,568.39/448,628.94
  6. Step 6: Final answer
    x = 199,483.85

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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.