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Finding the Fourth Proportional to 422,959.69, 634,605.58 and 186,136.24

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Solution

The fourth proportional to 422,959.69, 634,605.58 and 186,136.24 is: 279,277.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,959.69 : 634,605.58 = 186,136.24 : x
  2. Step 2: Convert to fraction form
    422,959.69/634,605.58 = 186,136.24/x
  3. Step 3: Cross multiply
    422,959.69x = 634,605.58 × 186,136.24
  4. Step 4: Simplify right side
    422,959.69x = 118,123,096,544.22
  5. Step 5: Solve for x
    x = 118,123,096,544.22/422,959.69
  6. Step 6: Final answer
    x = 279,277.44

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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.