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Finding the Fourth Proportional to 61,982.68, 85,533.69 and 33,687.76

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Solution

The fourth proportional to 61,982.68, 85,533.69 and 33,687.76 is: 46,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,982.68 : 85,533.69 = 33,687.76 : x
  2. Step 2: Convert to fraction form
    61,982.68/85,533.69 = 33,687.76/x
  3. Step 3: Cross multiply
    61,982.68x = 85,533.69 × 33,687.76
  4. Step 4: Simplify right side
    61,982.68x = 2,881,438,420.63
  5. Step 5: Solve for x
    x = 2,881,438,420.63/61,982.68
  6. Step 6: Final answer
    x = 46,487.80

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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.