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Finding the Fourth Proportional to 448,963.19, 673,428.38 and 133,411.89

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Solution

The fourth proportional to 448,963.19, 673,428.38 and 133,411.89 is: 200,112.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,963.19 : 673,428.38 = 133,411.89 : x
  2. Step 2: Convert to fraction form
    448,963.19/673,428.38 = 133,411.89/x
  3. Step 3: Cross multiply
    448,963.19x = 673,428.38 × 133,411.89
  4. Step 4: Simplify right side
    448,963.19x = 89,843,354,813.74
  5. Step 5: Solve for x
    x = 89,843,354,813.74/448,963.19
  6. Step 6: Final answer
    x = 200,112.96

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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.