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Finding the Fourth Proportional to 91,746.63, 137,620.16 and 25,187.67

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Solution

The fourth proportional to 91,746.63, 137,620.16 and 25,187.67 is: 37,781.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,746.63 : 137,620.16 = 25,187.67 : x
  2. Step 2: Convert to fraction form
    91,746.63/137,620.16 = 25,187.67/x
  3. Step 3: Cross multiply
    91,746.63x = 137,620.16 × 25,187.67
  4. Step 4: Simplify right side
    91,746.63x = 3,466,331,049.49
  5. Step 5: Solve for x
    x = 3,466,331,049.49/91,746.63
  6. Step 6: Final answer
    x = 37,781.56

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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.