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Finding the Fourth Proportional to 404,872.90, 606,920.55 and 314,865.70

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Solution

The fourth proportional to 404,872.90, 606,920.55 and 314,865.70 is: 471,996.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,872.90 : 606,920.55 = 314,865.70 : x
  2. Step 2: Convert to fraction form
    404,872.90/606,920.55 = 314,865.70/x
  3. Step 3: Cross multiply
    404,872.90x = 606,920.55 × 314,865.70
  4. Step 4: Simplify right side
    404,872.90x = 191,098,463,820.14
  5. Step 5: Solve for x
    x = 191,098,463,820.14/404,872.90
  6. Step 6: Final answer
    x = 471,996.18

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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.