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Finding the Fourth Proportional to 638,366.82, 957,690.27 and 189,122.80

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Solution

The fourth proportional to 638,366.82, 957,690.27 and 189,122.80 is: 283,725.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,366.82 : 957,690.27 = 189,122.80 : x
  2. Step 2: Convert to fraction form
    638,366.82/957,690.27 = 189,122.80/x
  3. Step 3: Cross multiply
    638,366.82x = 957,690.27 × 189,122.80
  4. Step 4: Simplify right side
    638,366.82x = 181,121,065,395.16
  5. Step 5: Solve for x
    x = 181,121,065,395.16/638,366.82
  6. Step 6: Final answer
    x = 283,725.69

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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.