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Finding the Fourth Proportional to 116,813.76, 161,202.97 and 63,098.78

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Solution

The fourth proportional to 116,813.76, 161,202.97 and 63,098.78 is: 87,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,813.76 : 161,202.97 = 63,098.78 : x
  2. Step 2: Convert to fraction form
    116,813.76/161,202.97 = 63,098.78/x
  3. Step 3: Cross multiply
    116,813.76x = 161,202.97 × 63,098.78
  4. Step 4: Simplify right side
    116,813.76x = 10,171,710,581.63
  5. Step 5: Solve for x
    x = 10,171,710,581.63/116,813.76
  6. Step 6: Final answer
    x = 87,076.30

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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.