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Finding the Fourth Proportional to 105,633.66, 158,343.86 and 66,218.45

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Solution

The fourth proportional to 105,633.66, 158,343.86 and 66,218.45 is: 99,260.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,633.66 : 158,343.86 = 66,218.45 : x
  2. Step 2: Convert to fraction form
    105,633.66/158,343.86 = 66,218.45/x
  3. Step 3: Cross multiply
    105,633.66x = 158,343.86 × 66,218.45
  4. Step 4: Simplify right side
    105,633.66x = 10,485,284,976.22
  5. Step 5: Solve for x
    x = 10,485,284,976.22/105,633.66
  6. Step 6: Final answer
    x = 99,260.83

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1.5x scale

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.