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Finding the Fourth Proportional to 492,073.08, 679,111.02 and 301,212.60

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Solution

The fourth proportional to 492,073.08, 679,111.02 and 301,212.60 is: 415,704.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,073.08 : 679,111.02 = 301,212.60 : x
  2. Step 2: Convert to fraction form
    492,073.08/679,111.02 = 301,212.60/x
  3. Step 3: Cross multiply
    492,073.08x = 679,111.02 × 301,212.60
  4. Step 4: Simplify right side
    492,073.08x = 204,556,796,022.85
  5. Step 5: Solve for x
    x = 204,556,796,022.85/492,073.08
  6. Step 6: Final answer
    x = 415,704.10

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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.