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Finding the Fourth Proportional to 352,131.40, 527,613.90 and 299,643.40

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Solution

The fourth proportional to 352,131.40, 527,613.90 and 299,643.40 is: 448,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,131.40 : 527,613.90 = 299,643.40 : x
  2. Step 2: Convert to fraction form
    352,131.40/527,613.90 = 299,643.40/x
  3. Step 3: Cross multiply
    352,131.40x = 527,613.90 × 299,643.40
  4. Step 4: Simplify right side
    352,131.40x = 158,096,022,883.26
  5. Step 5: Solve for x
    x = 158,096,022,883.26/352,131.40
  6. Step 6: Final answer
    x = 448,968.83

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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.