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Finding the Fourth Proportional to 118,871.29, 178,334.58 and 34,640.41

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Solution

The fourth proportional to 118,871.29, 178,334.58 and 34,640.41 is: 51,968.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,871.29 : 178,334.58 = 34,640.41 : x
  2. Step 2: Convert to fraction form
    118,871.29/178,334.58 = 34,640.41/x
  3. Step 3: Cross multiply
    118,871.29x = 178,334.58 × 34,640.41
  4. Step 4: Simplify right side
    118,871.29x = 6,177,582,968.38
  5. Step 5: Solve for x
    x = 6,177,582,968.38/118,871.29
  6. Step 6: Final answer
    x = 51,968.67

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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.