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Finding the Fourth Proportional to 161,712.79, 223,166.10 and 92,813.31

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Solution

The fourth proportional to 161,712.79, 223,166.10 and 92,813.31 is: 128,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,712.79 : 223,166.10 = 92,813.31 : x
  2. Step 2: Convert to fraction form
    161,712.79/223,166.10 = 92,813.31/x
  3. Step 3: Cross multiply
    161,712.79x = 223,166.10 × 92,813.31
  4. Step 4: Simplify right side
    161,712.79x = 20,712,784,768.84
  5. Step 5: Solve for x
    x = 20,712,784,768.84/161,712.79
  6. Step 6: Final answer
    x = 128,083.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.