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Finding the Fourth Proportional to 216,693.96, 324,827.70 and 126,622.36

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Solution

The fourth proportional to 216,693.96, 324,827.70 and 126,622.36 is: 189,808.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,693.96 : 324,827.70 = 126,622.36 : x
  2. Step 2: Convert to fraction form
    216,693.96/324,827.70 = 126,622.36/x
  3. Step 3: Cross multiply
    216,693.96x = 324,827.70 × 126,622.36
  4. Step 4: Simplify right side
    216,693.96x = 41,130,449,967.37
  5. Step 5: Solve for x
    x = 41,130,449,967.37/216,693.96
  6. Step 6: Final answer
    x = 189,808.94

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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.