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Finding the Fourth Proportional to 113,735.50, 156,954.99 and 63,434.50

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Solution

The fourth proportional to 113,735.50, 156,954.99 and 63,434.50 is: 87,539.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,735.50 : 156,954.99 = 63,434.50 : x
  2. Step 2: Convert to fraction form
    113,735.50/156,954.99 = 63,434.50/x
  3. Step 3: Cross multiply
    113,735.50x = 156,954.99 × 63,434.50
  4. Step 4: Simplify right side
    113,735.50x = 9,956,361,313.16
  5. Step 5: Solve for x
    x = 9,956,361,313.16/113,735.50
  6. Step 6: Final answer
    x = 87,539.61

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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.