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Finding the Fourth Proportional to 86,874.87, 119,881.44 and 48,109.90

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Solution

The fourth proportional to 86,874.87, 119,881.44 and 48,109.90 is: 66,388.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,874.87 : 119,881.44 = 48,109.90 : x
  2. Step 2: Convert to fraction form
    86,874.87/119,881.44 = 48,109.90/x
  3. Step 3: Cross multiply
    86,874.87x = 119,881.44 × 48,109.90
  4. Step 4: Simplify right side
    86,874.87x = 5,767,484,090.26
  5. Step 5: Solve for x
    x = 5,767,484,090.26/86,874.87
  6. Step 6: Final answer
    x = 66,388.41

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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.