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Finding the Fourth Proportional to 158,655.32, 218,928.12 and 94,991.48

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Solution

The fourth proportional to 158,655.32, 218,928.12 and 94,991.48 is: 131,078.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,655.32 : 218,928.12 = 94,991.48 : x
  2. Step 2: Convert to fraction form
    158,655.32/218,928.12 = 94,991.48/x
  3. Step 3: Cross multiply
    158,655.32x = 218,928.12 × 94,991.48
  4. Step 4: Simplify right side
    158,655.32x = 20,796,306,132.42
  5. Step 5: Solve for x
    x = 20,796,306,132.42/158,655.32
  6. Step 6: Final answer
    x = 131,078.53

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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.