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Finding the Fourth Proportional to 158,003.87, 236,971.08 and 45,659.66

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Solution

The fourth proportional to 158,003.87, 236,971.08 and 45,659.66 is: 68,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,003.87 : 236,971.08 = 45,659.66 : x
  2. Step 2: Convert to fraction form
    158,003.87/236,971.08 = 45,659.66/x
  3. Step 3: Cross multiply
    158,003.87x = 236,971.08 × 45,659.66
  4. Step 4: Simplify right side
    158,003.87x = 10,820,017,757.78
  5. Step 5: Solve for x
    x = 10,820,017,757.78/158,003.87
  6. Step 6: Final answer
    x = 68,479.45

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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.