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Finding the Fourth Proportional to 216,466.56, 324,747.77 and 74,308.64

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Solution

The fourth proportional to 216,466.56, 324,747.77 and 74,308.64 is: 111,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,466.56 : 324,747.77 = 74,308.64 : x
  2. Step 2: Convert to fraction form
    216,466.56/324,747.77 = 74,308.64/x
  3. Step 3: Cross multiply
    216,466.56x = 324,747.77 × 74,308.64
  4. Step 4: Simplify right side
    216,466.56x = 24,131,563,136.45
  5. Step 5: Solve for x
    x = 24,131,563,136.45/216,466.56
  6. Step 6: Final answer
    x = 111,479.40

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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.