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Finding the Fourth Proportional to 216,157.20, 324,624.60 and 157,059.60

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Solution

The fourth proportional to 216,157.20, 324,624.60 and 157,059.60 is: 235,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,157.20 : 324,624.60 = 157,059.60 : x
  2. Step 2: Convert to fraction form
    216,157.20/324,624.60 = 157,059.60/x
  3. Step 3: Cross multiply
    216,157.20x = 324,624.60 × 157,059.60
  4. Step 4: Simplify right side
    216,157.20x = 50,985,409,826.16
  5. Step 5: Solve for x
    x = 50,985,409,826.16/216,157.20
  6. Step 6: Final answer
    x = 235,871.90

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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.