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Finding the Fourth Proportional to 136,673.66, 188,631.60 and 113,972.60

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Solution

The fourth proportional to 136,673.66, 188,631.60 and 113,972.60 is: 157,300.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,673.66 : 188,631.60 = 113,972.60 : x
  2. Step 2: Convert to fraction form
    136,673.66/188,631.60 = 113,972.60/x
  3. Step 3: Cross multiply
    136,673.66x = 188,631.60 × 113,972.60
  4. Step 4: Simplify right side
    136,673.66x = 21,498,833,894.16
  5. Step 5: Solve for x
    x = 21,498,833,894.16/136,673.66
  6. Step 6: Final answer
    x = 157,300.49

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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.