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Finding the Fourth Proportional to 119,686.56, 165,166.60 and 65,971.60

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Solution

The fourth proportional to 119,686.56, 165,166.60 and 65,971.60 is: 91,040.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,686.56 : 165,166.60 = 65,971.60 : x
  2. Step 2: Convert to fraction form
    119,686.56/165,166.60 = 65,971.60/x
  3. Step 3: Cross multiply
    119,686.56x = 165,166.60 × 65,971.60
  4. Step 4: Simplify right side
    119,686.56x = 10,896,304,868.56
  5. Step 5: Solve for x
    x = 10,896,304,868.56/119,686.56
  6. Step 6: Final answer
    x = 91,040.34

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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.