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Finding the Fourth Proportional to 116,987.68, 161,442.99 and 63,272.69

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Solution

The fourth proportional to 116,987.68, 161,442.99 and 63,272.69 is: 87,316.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,987.68 : 161,442.99 = 63,272.69 : x
  2. Step 2: Convert to fraction form
    116,987.68/161,442.99 = 63,272.69/x
  3. Step 3: Cross multiply
    116,987.68x = 161,442.99 × 63,272.69
  4. Step 4: Simplify right side
    116,987.68x = 10,214,932,258.94
  5. Step 5: Solve for x
    x = 10,214,932,258.94/116,987.68
  6. Step 6: Final answer
    x = 87,316.31

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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.