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Finding the Fourth Proportional to 74,433.48, 111,392.78 and 45,958.74

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Solution

The fourth proportional to 74,433.48, 111,392.78 and 45,958.74 is: 68,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,433.48 : 111,392.78 = 45,958.74 : x
  2. Step 2: Convert to fraction form
    74,433.48/111,392.78 = 45,958.74/x
  3. Step 3: Cross multiply
    74,433.48x = 111,392.78 × 45,958.74
  4. Step 4: Simplify right side
    74,433.48x = 5,119,471,584.10
  5. Step 5: Solve for x
    x = 5,119,471,584.10/74,433.48
  6. Step 6: Final answer
    x = 68,779.15

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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.