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Finding the Fourth Proportional to 74,973.80, 112,331.10 and 35,445.80

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Solution

The fourth proportional to 74,973.80, 112,331.10 and 35,445.80 is: 53,107.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,973.80 : 112,331.10 = 35,445.80 : x
  2. Step 2: Convert to fraction form
    74,973.80/112,331.10 = 35,445.80/x
  3. Step 3: Cross multiply
    74,973.80x = 112,331.10 × 35,445.80
  4. Step 4: Simplify right side
    74,973.80x = 3,981,665,704.38
  5. Step 5: Solve for x
    x = 3,981,665,704.38/74,973.80
  6. Step 6: Final answer
    x = 53,107.43

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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.