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Finding the Fourth Proportional to 104,803.81, 144,628.39 and 57,057.06

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Solution

The fourth proportional to 104,803.81, 144,628.39 and 57,057.06 is: 78,738.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,803.81 : 144,628.39 = 57,057.06 : x
  2. Step 2: Convert to fraction form
    104,803.81/144,628.39 = 57,057.06/x
  3. Step 3: Cross multiply
    104,803.81x = 144,628.39 × 57,057.06
  4. Step 4: Simplify right side
    104,803.81x = 8,252,070,725.93
  5. Step 5: Solve for x
    x = 8,252,070,725.93/104,803.81
  6. Step 6: Final answer
    x = 78,738.27

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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.