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Finding the Fourth Proportional to 216,605.33, 324,838.86 and 74,416.31

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Solution

The fourth proportional to 216,605.33, 324,838.86 and 74,416.31 is: 111,600.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,605.33 : 324,838.86 = 74,416.31 : x
  2. Step 2: Convert to fraction form
    216,605.33/324,838.86 = 74,416.31/x
  3. Step 3: Cross multiply
    216,605.33x = 324,838.86 × 74,416.31
  4. Step 4: Simplify right side
    216,605.33x = 24,173,309,305.81
  5. Step 5: Solve for x
    x = 24,173,309,305.81/216,605.33
  6. Step 6: Final answer
    x = 111,600.71

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1.5x scale

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.