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Finding the Fourth Proportional to 119,889, 179,836.80 and 36,783

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Solution

The fourth proportional to 119,889, 179,836.80 and 36,783 is: 55,175.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,889 : 179,836.80 = 36,783 : x
  2. Step 2: Convert to fraction form
    119,889/179,836.80 = 36,783/x
  3. Step 3: Cross multiply
    119,889x = 179,836.80 × 36,783
  4. Step 4: Simplify right side
    119,889x = 6,614,937,014.40
  5. Step 5: Solve for x
    x = 6,614,937,014.40/119,889
  6. Step 6: Final answer
    x = 55,175.51

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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.