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Finding the Fourth Proportional to 109,459.44, 151,054.23 and 61,712.67

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Solution

The fourth proportional to 109,459.44, 151,054.23 and 61,712.67 is: 85,163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,459.44 : 151,054.23 = 61,712.67 : x
  2. Step 2: Convert to fraction form
    109,459.44/151,054.23 = 61,712.67/x
  3. Step 3: Cross multiply
    109,459.44x = 151,054.23 × 61,712.67
  4. Step 4: Simplify right side
    109,459.44x = 9,321,959,848.09
  5. Step 5: Solve for x
    x = 9,321,959,848.09/109,459.44
  6. Step 6: Final answer
    x = 85,163.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.