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Finding the Fourth Proportional to 55,167, 76,130.46 and 30,016.68

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Solution

The fourth proportional to 55,167, 76,130.46 and 30,016.68 is: 41,423.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,167 : 76,130.46 = 30,016.68 : x
  2. Step 2: Convert to fraction form
    55,167/76,130.46 = 30,016.68/x
  3. Step 3: Cross multiply
    55,167x = 76,130.46 × 30,016.68
  4. Step 4: Simplify right side
    55,167x = 2,285,183,656.07
  5. Step 5: Solve for x
    x = 2,285,183,656.07/55,167
  6. Step 6: Final answer
    x = 41,423.02

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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.