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Finding the Fourth Proportional to 158,548.53, 218,796.90 and 86,927.03

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Solution

The fourth proportional to 158,548.53, 218,796.90 and 86,927.03 is: 119,959.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,548.53 : 218,796.90 = 86,927.03 : x
  2. Step 2: Convert to fraction form
    158,548.53/218,796.90 = 86,927.03/x
  3. Step 3: Cross multiply
    158,548.53x = 218,796.90 × 86,927.03
  4. Step 4: Simplify right side
    158,548.53x = 19,019,363,596.22
  5. Step 5: Solve for x
    x = 19,019,363,596.22/158,548.53
  6. Step 6: Final answer
    x = 119,959.26

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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.