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Finding the Fourth Proportional to 159,653.18, 220,336.18 and 91,679.06

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Solution

The fourth proportional to 159,653.18, 220,336.18 and 91,679.06 is: 126,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,653.18 : 220,336.18 = 91,679.06 : x
  2. Step 2: Convert to fraction form
    159,653.18/220,336.18 = 91,679.06/x
  3. Step 3: Cross multiply
    159,653.18x = 220,336.18 × 91,679.06
  4. Step 4: Simplify right side
    159,653.18x = 20,200,213,866.39
  5. Step 5: Solve for x
    x = 20,200,213,866.39/159,653.18
  6. Step 6: Final answer
    x = 126,525.60

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1.5x scale

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.