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Finding the Fourth Proportional to 216,505.08, 324,674.52 and 74,323.86

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Solution

The fourth proportional to 216,505.08, 324,674.52 and 74,323.86 is: 111,457.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,505.08 : 324,674.52 = 74,323.86 : x
  2. Step 2: Convert to fraction form
    216,505.08/324,674.52 = 74,323.86/x
  3. Step 3: Cross multiply
    216,505.08x = 324,674.52 × 74,323.86
  4. Step 4: Simplify right side
    216,505.08x = 24,131,063,570.05
  5. Step 5: Solve for x
    x = 24,131,063,570.05/216,505.08
  6. Step 6: Final answer
    x = 111,457.26

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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.