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Finding the Fourth Proportional to 492,041.74, 679,040.26 and 274,264.68

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Solution

The fourth proportional to 492,041.74, 679,040.26 and 274,264.68 is: 378,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,041.74 : 679,040.26 = 274,264.68 : x
  2. Step 2: Convert to fraction form
    492,041.74/679,040.26 = 274,264.68/x
  3. Step 3: Cross multiply
    492,041.74x = 679,040.26 × 274,264.68
  4. Step 4: Simplify right side
    492,041.74x = 186,236,763,019.50
  5. Step 5: Solve for x
    x = 186,236,763,019.50/492,041.74
  6. Step 6: Final answer
    x = 378,497.90

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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.