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Finding the Fourth Proportional to 69,258.65, 103,628.77 and 45,930.65

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Solution

The fourth proportional to 69,258.65, 103,628.77 and 45,930.65 is: 68,724.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,258.65 : 103,628.77 = 45,930.65 : x
  2. Step 2: Convert to fraction form
    69,258.65/103,628.77 = 45,930.65/x
  3. Step 3: Cross multiply
    69,258.65x = 103,628.77 × 45,930.65
  4. Step 4: Simplify right side
    69,258.65x = 4,759,736,764.80
  5. Step 5: Solve for x
    x = 4,759,736,764.80/69,258.65
  6. Step 6: Final answer
    x = 68,724.08

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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.