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Finding the Fourth Proportional to 425,405.99, 638,358.10 and 236,024.77

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Solution

The fourth proportional to 425,405.99, 638,358.10 and 236,024.77 is: 354,175.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,405.99 : 638,358.10 = 236,024.77 : x
  2. Step 2: Convert to fraction form
    425,405.99/638,358.10 = 236,024.77/x
  3. Step 3: Cross multiply
    425,405.99x = 638,358.10 × 236,024.77
  4. Step 4: Simplify right side
    425,405.99x = 150,668,323,730.14
  5. Step 5: Solve for x
    x = 150,668,323,730.14/425,405.99
  6. Step 6: Final answer
    x = 354,175.37

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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.