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Finding the Fourth Proportional to 62,908.16, 86,834.60 and 39,048.80

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Solution

The fourth proportional to 62,908.16, 86,834.60 and 39,048.80 is: 53,900.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,908.16 : 86,834.60 = 39,048.80 : x
  2. Step 2: Convert to fraction form
    62,908.16/86,834.60 = 39,048.80/x
  3. Step 3: Cross multiply
    62,908.16x = 86,834.60 × 39,048.80
  4. Step 4: Simplify right side
    62,908.16x = 3,390,786,928.48
  5. Step 5: Solve for x
    x = 3,390,786,928.48/62,908.16
  6. Step 6: Final answer
    x = 53,900.59

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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.