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Finding the Fourth Proportional to 116,989.88, 161,445.56 and 63,274.96

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Solution

The fourth proportional to 116,989.88, 161,445.56 and 63,274.96 is: 87,319.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,989.88 : 161,445.56 = 63,274.96 : x
  2. Step 2: Convert to fraction form
    116,989.88/161,445.56 = 63,274.96/x
  3. Step 3: Cross multiply
    116,989.88x = 161,445.56 × 63,274.96
  4. Step 4: Simplify right side
    116,989.88x = 10,215,461,351.18
  5. Step 5: Solve for x
    x = 10,215,461,351.18/116,989.88
  6. Step 6: Final answer
    x = 87,319.19

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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.