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Finding the Fourth Proportional to 119,909.77, 179,772.21 and 45,028.31

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Solution

The fourth proportional to 119,909.77, 179,772.21 and 45,028.31 is: 67,507.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,909.77 : 179,772.21 = 45,028.31 : x
  2. Step 2: Convert to fraction form
    119,909.77/179,772.21 = 45,028.31/x
  3. Step 3: Cross multiply
    119,909.77x = 179,772.21 × 45,028.31
  4. Step 4: Simplify right side
    119,909.77x = 8,094,837,902.40
  5. Step 5: Solve for x
    x = 8,094,837,902.40/119,909.77
  6. Step 6: Final answer
    x = 67,507.74

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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.