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Finding the Fourth Proportional to 119,451.38, 164,842.94 and 65,736.40

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Solution

The fourth proportional to 119,451.38, 164,842.94 and 65,736.40 is: 90,716.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,451.38 : 164,842.94 = 65,736.40 : x
  2. Step 2: Convert to fraction form
    119,451.38/164,842.94 = 65,736.40/x
  3. Step 3: Cross multiply
    119,451.38x = 164,842.94 × 65,736.40
  4. Step 4: Simplify right side
    119,451.38x = 10,836,181,441.02
  5. Step 5: Solve for x
    x = 10,836,181,441.02/119,451.38
  6. Step 6: Final answer
    x = 90,716.25

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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.