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Finding the Fourth Proportional to 117,993.72, 177,029.46 and 43,136.76

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Solution

The fourth proportional to 117,993.72, 177,029.46 and 43,136.76 is: 64,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,993.72 : 177,029.46 = 43,136.76 : x
  2. Step 2: Convert to fraction form
    117,993.72/177,029.46 = 43,136.76/x
  3. Step 3: Cross multiply
    117,993.72x = 177,029.46 × 43,136.76
  4. Step 4: Simplify right side
    117,993.72x = 7,636,477,328.95
  5. Step 5: Solve for x
    x = 7,636,477,328.95/117,993.72
  6. Step 6: Final answer
    x = 64,719.35

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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.