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Finding the Fourth Proportional to 216,294.64, 324,586.60 and 76,052.72

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Solution

The fourth proportional to 216,294.64, 324,586.60 and 76,052.72 is: 114,129.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,294.64 : 324,586.60 = 76,052.72 : x
  2. Step 2: Convert to fraction form
    216,294.64/324,586.60 = 76,052.72/x
  3. Step 3: Cross multiply
    216,294.64x = 324,586.60 × 76,052.72
  4. Step 4: Simplify right side
    216,294.64x = 24,685,693,805.55
  5. Step 5: Solve for x
    x = 24,685,693,805.55/216,294.64
  6. Step 6: Final answer
    x = 114,129.94

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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.