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Finding the Fourth Proportional to 116,963.60, 161,409.87 and 68,555.88

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Solution

The fourth proportional to 116,963.60, 161,409.87 and 68,555.88 is: 94,607.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,963.60 : 161,409.87 = 68,555.88 : x
  2. Step 2: Convert to fraction form
    116,963.60/161,409.87 = 68,555.88/x
  3. Step 3: Cross multiply
    116,963.60x = 161,409.87 × 68,555.88
  4. Step 4: Simplify right side
    116,963.60x = 11,065,595,678.54
  5. Step 5: Solve for x
    x = 11,065,595,678.54/116,963.60
  6. Step 6: Final answer
    x = 94,607.18

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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.