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Finding the Fourth Proportional to 74,614.33, 102,969.06 and 40,623.80

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Solution

The fourth proportional to 74,614.33, 102,969.06 and 40,623.80 is: 56,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,614.33 : 102,969.06 = 40,623.80 : x
  2. Step 2: Convert to fraction form
    74,614.33/102,969.06 = 40,623.80/x
  3. Step 3: Cross multiply
    74,614.33x = 102,969.06 × 40,623.80
  4. Step 4: Simplify right side
    74,614.33x = 4,182,993,832.44
  5. Step 5: Solve for x
    x = 4,182,993,832.44/74,614.33
  6. Step 6: Final answer
    x = 56,061.53

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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.