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Finding the Fourth Proportional to 118,143.63, 177,302.93 and 61,997.67

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Solution

The fourth proportional to 118,143.63, 177,302.93 and 61,997.67 is: 93,042.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,143.63 : 177,302.93 = 61,997.67 : x
  2. Step 2: Convert to fraction form
    118,143.63/177,302.93 = 61,997.67/x
  3. Step 3: Cross multiply
    118,143.63x = 177,302.93 × 61,997.67
  4. Step 4: Simplify right side
    118,143.63x = 10,992,368,234.18
  5. Step 5: Solve for x
    x = 10,992,368,234.18/118,143.63
  6. Step 6: Final answer
    x = 93,042.41

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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.