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Finding the Fourth Proportional to 74,429.40, 111,642.30 and 44,824.80

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Solution

The fourth proportional to 74,429.40, 111,642.30 and 44,824.80 is: 67,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,429.40 : 111,642.30 = 44,824.80 : x
  2. Step 2: Convert to fraction form
    74,429.40/111,642.30 = 44,824.80/x
  3. Step 3: Cross multiply
    74,429.40x = 111,642.30 × 44,824.80
  4. Step 4: Simplify right side
    74,429.40x = 5,004,343,769.04
  5. Step 5: Solve for x
    x = 5,004,343,769.04/74,429.40
  6. Step 6: Final answer
    x = 67,236.12

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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.