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Finding the Fourth Proportional to 58,907.44, 81,284.88 and 39,828.70

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Solution

The fourth proportional to 58,907.44, 81,284.88 and 39,828.70 is: 54,958.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,907.44 : 81,284.88 = 39,828.70 : x
  2. Step 2: Convert to fraction form
    58,907.44/81,284.88 = 39,828.70/x
  3. Step 3: Cross multiply
    58,907.44x = 81,284.88 × 39,828.70
  4. Step 4: Simplify right side
    58,907.44x = 3,237,471,100.06
  5. Step 5: Solve for x
    x = 3,237,471,100.06/58,907.44
  6. Step 6: Final answer
    x = 54,958.61

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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.