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Finding the Fourth Proportional to 86,212.76, 118,972.44 and 48,487.01

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Solution

The fourth proportional to 86,212.76, 118,972.44 and 48,487.01 is: 66,911.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,212.76 : 118,972.44 = 48,487.01 : x
  2. Step 2: Convert to fraction form
    86,212.76/118,972.44 = 48,487.01/x
  3. Step 3: Cross multiply
    86,212.76x = 118,972.44 × 48,487.01
  4. Step 4: Simplify right side
    86,212.76x = 5,768,617,293.14
  5. Step 5: Solve for x
    x = 5,768,617,293.14/86,212.76
  6. Step 6: Final answer
    x = 66,911.41

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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.