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Finding the Fourth Proportional to 54,235.78, 74,844.79 and 30,362.65

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Solution

The fourth proportional to 54,235.78, 74,844.79 and 30,362.65 is: 41,900.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,235.78 : 74,844.79 = 30,362.65 : x
  2. Step 2: Convert to fraction form
    54,235.78/74,844.79 = 30,362.65/x
  3. Step 3: Cross multiply
    54,235.78x = 74,844.79 × 30,362.65
  4. Step 4: Simplify right side
    54,235.78x = 2,272,486,163.09
  5. Step 5: Solve for x
    x = 2,272,486,163.09/54,235.78
  6. Step 6: Final answer
    x = 41,900.13

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1.5x scale

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.