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Finding the Fourth Proportional to 117,900.48, 162,709.92 and 67,615.68

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Solution

The fourth proportional to 117,900.48, 162,709.92 and 67,615.68 is: 93,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,900.48 : 162,709.92 = 67,615.68 : x
  2. Step 2: Convert to fraction form
    117,900.48/162,709.92 = 67,615.68/x
  3. Step 3: Cross multiply
    117,900.48x = 162,709.92 × 67,615.68
  4. Step 4: Simplify right side
    117,900.48x = 11,001,741,883.55
  5. Step 5: Solve for x
    x = 11,001,741,883.55/117,900.48
  6. Step 6: Final answer
    x = 93,313.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.