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Finding the Fourth Proportional to 992,609.72, 1,489,136.03 and 361,523.53

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Solution

The fourth proportional to 992,609.72, 1,489,136.03 and 361,523.53 is: 542,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,609.72 : 1,489,136.03 = 361,523.53 : x
  2. Step 2: Convert to fraction form
    992,609.72/1,489,136.03 = 361,523.53/x
  3. Step 3: Cross multiply
    992,609.72x = 1,489,136.03 × 361,523.53
  4. Step 4: Simplify right side
    992,609.72x = 538,357,715,625.30
  5. Step 5: Solve for x
    x = 538,357,715,625.30/992,609.72
  6. Step 6: Final answer
    x = 542,365.95

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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.