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Finding the Fourth Proportional to 425,844.22, 637,437.72 and 313,651.12

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Solution

The fourth proportional to 425,844.22, 637,437.72 and 313,651.12 is: 469,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,844.22 : 637,437.72 = 313,651.12 : x
  2. Step 2: Convert to fraction form
    425,844.22/637,437.72 = 313,651.12/x
  3. Step 3: Cross multiply
    425,844.22x = 637,437.72 × 313,651.12
  4. Step 4: Simplify right side
    425,844.22x = 199,933,053,239.99
  5. Step 5: Solve for x
    x = 199,933,053,239.99/425,844.22
  6. Step 6: Final answer
    x = 469,498.10

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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.