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Finding the Fourth Proportional to 158,168.62, 218,276.22 and 86,548.60

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Solution

The fourth proportional to 158,168.62, 218,276.22 and 86,548.60 is: 119,439.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,168.62 : 218,276.22 = 86,548.60 : x
  2. Step 2: Convert to fraction form
    158,168.62/218,276.22 = 86,548.60/x
  3. Step 3: Cross multiply
    158,168.62x = 218,276.22 × 86,548.60
  4. Step 4: Simplify right side
    158,168.62x = 18,891,501,254.29
  5. Step 5: Solve for x
    x = 18,891,501,254.29/158,168.62
  6. Step 6: Final answer
    x = 119,439.00

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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.