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Finding the Fourth Proportional to 132,871.70, 199,307.55 and 127,112.60

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Solution

The fourth proportional to 132,871.70, 199,307.55 and 127,112.60 is: 190,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,871.70 : 199,307.55 = 127,112.60 : x
  2. Step 2: Convert to fraction form
    132,871.70/199,307.55 = 127,112.60/x
  3. Step 3: Cross multiply
    132,871.70x = 199,307.55 × 127,112.60
  4. Step 4: Simplify right side
    132,871.70x = 25,334,500,880.13
  5. Step 5: Solve for x
    x = 25,334,500,880.13/132,871.70
  6. Step 6: Final answer
    x = 190,668.90

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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.