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Finding the Fourth Proportional to 86,181.67, 118,929.56 and 48,455.92

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Solution

The fourth proportional to 86,181.67, 118,929.56 and 48,455.92 is: 66,868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,181.67 : 118,929.56 = 48,455.92 : x
  2. Step 2: Convert to fraction form
    86,181.67/118,929.56 = 48,455.92/x
  3. Step 3: Cross multiply
    86,181.67x = 118,929.56 × 48,455.92
  4. Step 4: Simplify right side
    86,181.67x = 5,762,841,245.00
  5. Step 5: Solve for x
    x = 5,762,841,245.00/86,181.67
  6. Step 6: Final answer
    x = 66,868.53

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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.