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Finding the Fourth Proportional to 424,994.21, 637,338.22 and 140,632.27

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Solution

The fourth proportional to 424,994.21, 637,338.22 and 140,632.27 is: 210,897.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,994.21 : 637,338.22 = 140,632.27 : x
  2. Step 2: Convert to fraction form
    424,994.21/637,338.22 = 140,632.27/x
  3. Step 3: Cross multiply
    424,994.21x = 637,338.22 × 140,632.27
  4. Step 4: Simplify right side
    424,994.21x = 89,630,320,636.36
  5. Step 5: Solve for x
    x = 89,630,320,636.36/424,994.21
  6. Step 6: Final answer
    x = 210,897.75

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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.