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Finding the Fourth Proportional to 62,720.33, 86,554.11 and 34,039.98

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Solution

The fourth proportional to 62,720.33, 86,554.11 and 34,039.98 is: 46,975.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,720.33 : 86,554.11 = 34,039.98 : x
  2. Step 2: Convert to fraction form
    62,720.33/86,554.11 = 34,039.98/x
  3. Step 3: Cross multiply
    62,720.33x = 86,554.11 × 34,039.98
  4. Step 4: Simplify right side
    62,720.33x = 2,946,300,173.32
  5. Step 5: Solve for x
    x = 2,946,300,173.32/62,720.33
  6. Step 6: Final answer
    x = 46,975.21

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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.