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Finding the Fourth Proportional to 62,907.84, 86,783.81 and 40,235.48

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Solution

The fourth proportional to 62,907.84, 86,783.81 and 40,235.48 is: 55,506.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,907.84 : 86,783.81 = 40,235.48 : x
  2. Step 2: Convert to fraction form
    62,907.84/86,783.81 = 40,235.48/x
  3. Step 3: Cross multiply
    62,907.84x = 86,783.81 × 40,235.48
  4. Step 4: Simplify right side
    62,907.84x = 3,491,788,430.08
  5. Step 5: Solve for x
    x = 3,491,788,430.08/62,907.84
  6. Step 6: Final answer
    x = 55,506.41

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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.