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Finding the Fourth Proportional to 107,410.80, 161,173.80 and 45,087.60

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Solution

The fourth proportional to 107,410.80, 161,173.80 and 45,087.60 is: 67,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,410.80 : 161,173.80 = 45,087.60 : x
  2. Step 2: Convert to fraction form
    107,410.80/161,173.80 = 45,087.60/x
  3. Step 3: Cross multiply
    107,410.80x = 161,173.80 × 45,087.60
  4. Step 4: Simplify right side
    107,410.80x = 7,266,939,824.88
  5. Step 5: Solve for x
    x = 7,266,939,824.88/107,410.80
  6. Step 6: Final answer
    x = 67,655.58

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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.