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Finding the Fourth Proportional to 492,288.33, 679,020.66 and 301,396.05

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Solution

The fourth proportional to 492,288.33, 679,020.66 and 301,396.05 is: 415,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,288.33 : 679,020.66 = 301,396.05 : x
  2. Step 2: Convert to fraction form
    492,288.33/679,020.66 = 301,396.05/x
  3. Step 3: Cross multiply
    492,288.33x = 679,020.66 × 301,396.05
  4. Step 4: Simplify right side
    492,288.33x = 204,654,144,792.39
  5. Step 5: Solve for x
    x = 204,654,144,792.39/492,288.33
  6. Step 6: Final answer
    x = 415,720.08

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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.