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Finding the Fourth Proportional to 492,111.80, 679,114.28 and 265,757.28

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Solution

The fourth proportional to 492,111.80, 679,114.28 and 265,757.28 is: 366,745.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,111.80 : 679,114.28 = 265,757.28 : x
  2. Step 2: Convert to fraction form
    492,111.80/679,114.28 = 265,757.28/x
  3. Step 3: Cross multiply
    492,111.80x = 679,114.28 × 265,757.28
  4. Step 4: Simplify right side
    492,111.80x = 180,479,563,861.96
  5. Step 5: Solve for x
    x = 180,479,563,861.96/492,111.80
  6. Step 6: Final answer
    x = 366,745.04

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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.