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Finding the Fourth Proportional to 103,950.96, 156,137.40 and 91,746.96

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Solution

The fourth proportional to 103,950.96, 156,137.40 and 91,746.96 is: 137,806.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,950.96 : 156,137.40 = 91,746.96 : x
  2. Step 2: Convert to fraction form
    103,950.96/156,137.40 = 91,746.96/x
  3. Step 3: Cross multiply
    103,950.96x = 156,137.40 × 91,746.96
  4. Step 4: Simplify right side
    103,950.96x = 14,325,131,792.30
  5. Step 5: Solve for x
    x = 14,325,131,792.30/103,950.96
  6. Step 6: Final answer
    x = 137,806.63

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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.