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Finding the Fourth Proportional to 117,090.44, 175,636.11 and 28,343.80

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Solution

The fourth proportional to 117,090.44, 175,636.11 and 28,343.80 is: 42,515.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,090.44 : 175,636.11 = 28,343.80 : x
  2. Step 2: Convert to fraction form
    117,090.44/175,636.11 = 28,343.80/x
  3. Step 3: Cross multiply
    117,090.44x = 175,636.11 × 28,343.80
  4. Step 4: Simplify right side
    117,090.44x = 4,978,194,941.02
  5. Step 5: Solve for x
    x = 4,978,194,941.02/117,090.44
  6. Step 6: Final answer
    x = 42,515.81

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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.