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Finding the Fourth Proportional to 58,562, 80,786.76 and 39,705.04

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Solution

The fourth proportional to 58,562, 80,786.76 and 39,705.04 is: 54,773.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,562 : 80,786.76 = 39,705.04 : x
  2. Step 2: Convert to fraction form
    58,562/80,786.76 = 39,705.04/x
  3. Step 3: Cross multiply
    58,562x = 80,786.76 × 39,705.04
  4. Step 4: Simplify right side
    58,562x = 3,207,641,537.27
  5. Step 5: Solve for x
    x = 3,207,641,537.27/58,562
  6. Step 6: Final answer
    x = 54,773.43

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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.