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Finding the Fourth Proportional to 113,402.79, 169,992.65 and 54,224.62

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Solution

The fourth proportional to 113,402.79, 169,992.65 and 54,224.62 is: 81,283.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,402.79 : 169,992.65 = 54,224.62 : x
  2. Step 2: Convert to fraction form
    113,402.79/169,992.65 = 54,224.62/x
  3. Step 3: Cross multiply
    113,402.79x = 169,992.65 × 54,224.62
  4. Step 4: Simplify right side
    113,402.79x = 9,217,786,559.62
  5. Step 5: Solve for x
    x = 9,217,786,559.62/113,402.79
  6. Step 6: Final answer
    x = 81,283.60

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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.