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Finding the Fourth Proportional to 77,661.77, 116,609.31 and 44,419.37

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Solution

The fourth proportional to 77,661.77, 116,609.31 and 44,419.37 is: 66,695.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,661.77 : 116,609.31 = 44,419.37 : x
  2. Step 2: Convert to fraction form
    77,661.77/116,609.31 = 44,419.37/x
  3. Step 3: Cross multiply
    77,661.77x = 116,609.31 × 44,419.37
  4. Step 4: Simplify right side
    77,661.77x = 5,179,711,503.29
  5. Step 5: Solve for x
    x = 5,179,711,503.29/77,661.77
  6. Step 6: Final answer
    x = 66,695.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.