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Finding the Fourth Proportional to 340,926.78, 511,389.75 and 91,608.78

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Solution

The fourth proportional to 340,926.78, 511,389.75 and 91,608.78 is: 137,413.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,926.78 : 511,389.75 = 91,608.78 : x
  2. Step 2: Convert to fraction form
    340,926.78/511,389.75 = 91,608.78/x
  3. Step 3: Cross multiply
    340,926.78x = 511,389.75 × 91,608.78
  4. Step 4: Simplify right side
    340,926.78x = 46,847,791,102.01
  5. Step 5: Solve for x
    x = 46,847,791,102.01/340,926.78
  6. Step 6: Final answer
    x = 137,413.06

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1.5x scale

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.