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Finding the Fourth Proportional to 191,206.84, 263,871.83 and 105,169.45

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Solution

The fourth proportional to 191,206.84, 263,871.83 and 105,169.45 is: 145,137.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,206.84 : 263,871.83 = 105,169.45 : x
  2. Step 2: Convert to fraction form
    191,206.84/263,871.83 = 105,169.45/x
  3. Step 3: Cross multiply
    191,206.84x = 263,871.83 × 105,169.45
  4. Step 4: Simplify right side
    191,206.84x = 27,751,255,231.59
  5. Step 5: Solve for x
    x = 27,751,255,231.59/191,206.84
  6. Step 6: Final answer
    x = 145,137.36

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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.