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Finding the Fourth Proportional to 69,574.36, 104,316.78 and 45,854.28

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Solution

The fourth proportional to 69,574.36, 104,316.78 and 45,854.28 is: 68,751.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,574.36 : 104,316.78 = 45,854.28 : x
  2. Step 2: Convert to fraction form
    69,574.36/104,316.78 = 45,854.28/x
  3. Step 3: Cross multiply
    69,574.36x = 104,316.78 × 45,854.28
  4. Step 4: Simplify right side
    69,574.36x = 4,783,370,838.82
  5. Step 5: Solve for x
    x = 4,783,370,838.82/69,574.36
  6. Step 6: Final answer
    x = 68,751.92

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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.