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Finding the Fourth Proportional to 116,820.81, 161,208.87 and 73,823.28

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Solution

The fourth proportional to 116,820.81, 161,208.87 and 73,823.28 is: 101,873.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,820.81 : 161,208.87 = 73,823.28 : x
  2. Step 2: Convert to fraction form
    116,820.81/161,208.87 = 73,823.28/x
  3. Step 3: Cross multiply
    116,820.81x = 161,208.87 × 73,823.28
  4. Step 4: Simplify right side
    116,820.81x = 11,900,967,548.49
  5. Step 5: Solve for x
    x = 11,900,967,548.49/116,820.81
  6. Step 6: Final answer
    x = 101,873.69

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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.