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Finding the Fourth Proportional to 158,698.44, 218,996.33 and 87,076.89

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Solution

The fourth proportional to 158,698.44, 218,996.33 and 87,076.89 is: 120,161.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,698.44 : 218,996.33 = 87,076.89 : x
  2. Step 2: Convert to fraction form
    158,698.44/218,996.33 = 87,076.89/x
  3. Step 3: Cross multiply
    158,698.44x = 218,996.33 × 87,076.89
  4. Step 4: Simplify right side
    158,698.44x = 19,069,518,902.43
  5. Step 5: Solve for x
    x = 19,069,518,902.43/158,698.44
  6. Step 6: Final answer
    x = 120,161.98

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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.