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Finding the Fourth Proportional to 104,858.65, 144,706.67 and 57,112.93

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Solution

The fourth proportional to 104,858.65, 144,706.67 and 57,112.93 is: 78,816.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,858.65 : 144,706.67 = 57,112.93 : x
  2. Step 2: Convert to fraction form
    104,858.65/144,706.67 = 57,112.93/x
  3. Step 3: Cross multiply
    104,858.65x = 144,706.67 × 57,112.93
  4. Step 4: Simplify right side
    104,858.65x = 8,264,621,914.24
  5. Step 5: Solve for x
    x = 8,264,621,914.24/104,858.65
  6. Step 6: Final answer
    x = 78,816.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.