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Finding the Fourth Proportional to 113,629.60, 170,298.60 and 54,337.60

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Solution

The fourth proportional to 113,629.60, 170,298.60 and 54,337.60 is: 81,436.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,629.60 : 170,298.60 = 54,337.60 : x
  2. Step 2: Convert to fraction form
    113,629.60/170,298.60 = 54,337.60/x
  3. Step 3: Cross multiply
    113,629.60x = 170,298.60 × 54,337.60
  4. Step 4: Simplify right side
    113,629.60x = 9,253,617,207.36
  5. Step 5: Solve for x
    x = 9,253,617,207.36/113,629.60
  6. Step 6: Final answer
    x = 81,436.68

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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.