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Finding the Fourth Proportional to 638,316.91, 957,342.70 and 188,932.33

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Solution

The fourth proportional to 638,316.91, 957,342.70 and 188,932.33 is: 283,359.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,316.91 : 957,342.70 = 188,932.33 : x
  2. Step 2: Convert to fraction form
    638,316.91/957,342.70 = 188,932.33/x
  3. Step 3: Cross multiply
    638,316.91x = 957,342.70 × 188,932.33
  4. Step 4: Simplify right side
    638,316.91x = 180,872,986,919.49
  5. Step 5: Solve for x
    x = 180,872,986,919.49/638,316.91
  6. Step 6: Final answer
    x = 283,359.23

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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.