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Finding the Fourth Proportional to 126,090.69, 189,135.69 and 37,351.11

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Solution

The fourth proportional to 126,090.69, 189,135.69 and 37,351.11 is: 56,026.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,090.69 : 189,135.69 = 37,351.11 : x
  2. Step 2: Convert to fraction form
    126,090.69/189,135.69 = 37,351.11/x
  3. Step 3: Cross multiply
    126,090.69x = 189,135.69 × 37,351.11
  4. Step 4: Simplify right side
    126,090.69x = 7,064,427,962.12
  5. Step 5: Solve for x
    x = 7,064,427,962.12/126,090.69
  6. Step 6: Final answer
    x = 56,026.56

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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.