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Finding the Fourth Proportional to 132,918.40, 199,486.40 and 131,881.60

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Solution

The fourth proportional to 132,918.40, 199,486.40 and 131,881.60 is: 197,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,918.40 : 199,486.40 = 131,881.60 : x
  2. Step 2: Convert to fraction form
    132,918.40/199,486.40 = 131,881.60/x
  3. Step 3: Cross multiply
    132,918.40x = 199,486.40 × 131,881.60
  4. Step 4: Simplify right side
    132,918.40x = 26,308,585,610.24
  5. Step 5: Solve for x
    x = 26,308,585,610.24/132,918.40
  6. Step 6: Final answer
    x = 197,930.35

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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.