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Finding the Fourth Proportional to 116,398.89, 174,487.64 and 74,160.41

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Solution

The fourth proportional to 116,398.89, 174,487.64 and 74,160.41 is: 111,170.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,398.89 : 174,487.64 = 74,160.41 : x
  2. Step 2: Convert to fraction form
    116,398.89/174,487.64 = 74,160.41/x
  3. Step 3: Cross multiply
    116,398.89x = 174,487.64 × 74,160.41
  4. Step 4: Simplify right side
    116,398.89x = 12,940,073,679.09
  5. Step 5: Solve for x
    x = 12,940,073,679.09/116,398.89
  6. Step 6: Final answer
    x = 111,170.08

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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.