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Finding the Fourth Proportional to 200,357.15, 300,646.38 and 111,660.63

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Solution

The fourth proportional to 200,357.15, 300,646.38 and 111,660.63 is: 167,552.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,357.15 : 300,646.38 = 111,660.63 : x
  2. Step 2: Convert to fraction form
    200,357.15/300,646.38 = 111,660.63/x
  3. Step 3: Cross multiply
    200,357.15x = 300,646.38 × 111,660.63
  4. Step 4: Simplify right side
    200,357.15x = 33,570,363,489.32
  5. Step 5: Solve for x
    x = 33,570,363,489.32/200,357.15
  6. Step 6: Final answer
    x = 167,552.61

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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.