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Finding the Fourth Proportional to 57,866.51, 86,710.46 and 39,072.89

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Solution

The fourth proportional to 57,866.51, 86,710.46 and 39,072.89 is: 58,549.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,866.51 : 86,710.46 = 39,072.89 : x
  2. Step 2: Convert to fraction form
    57,866.51/86,710.46 = 39,072.89/x
  3. Step 3: Cross multiply
    57,866.51x = 86,710.46 × 39,072.89
  4. Step 4: Simplify right side
    57,866.51x = 3,388,027,636.51
  5. Step 5: Solve for x
    x = 3,388,027,636.51/57,866.51
  6. Step 6: Final answer
    x = 58,549.03

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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.