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Finding the Fourth Proportional to 91,090.44, 136,662.12 and 37,772.64

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Solution

The fourth proportional to 91,090.44, 136,662.12 and 37,772.64 is: 56,669.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,090.44 : 136,662.12 = 37,772.64 : x
  2. Step 2: Convert to fraction form
    91,090.44/136,662.12 = 37,772.64/x
  3. Step 3: Cross multiply
    91,090.44x = 136,662.12 × 37,772.64
  4. Step 4: Simplify right side
    91,090.44x = 5,162,089,060.40
  5. Step 5: Solve for x
    x = 5,162,089,060.40/91,090.44
  6. Step 6: Final answer
    x = 56,669.93

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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.