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Finding the Fourth Proportional to 353,620.30, 530,533.79 and 113,728.81

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Solution

The fourth proportional to 353,620.30, 530,533.79 and 113,728.81 is: 170,626.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,620.30 : 530,533.79 = 113,728.81 : x
  2. Step 2: Convert to fraction form
    353,620.30/530,533.79 = 113,728.81/x
  3. Step 3: Cross multiply
    353,620.30x = 530,533.79 × 113,728.81
  4. Step 4: Simplify right side
    353,620.30x = 60,336,978,366.15
  5. Step 5: Solve for x
    x = 60,336,978,366.15/353,620.30
  6. Step 6: Final answer
    x = 170,626.45

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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.