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Finding the Fourth Proportional to 117,333.92, 161,918.87 and 66,344.92

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Solution

The fourth proportional to 117,333.92, 161,918.87 and 66,344.92 is: 91,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,333.92 : 161,918.87 = 66,344.92 : x
  2. Step 2: Convert to fraction form
    117,333.92/161,918.87 = 66,344.92/x
  3. Step 3: Cross multiply
    117,333.92x = 161,918.87 × 66,344.92
  4. Step 4: Simplify right side
    117,333.92x = 10,742,495,210.70
  5. Step 5: Solve for x
    x = 10,742,495,210.70/117,333.92
  6. Step 6: Final answer
    x = 91,554.90

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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.