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Finding the Fourth Proportional to 425,243.17, 637,777.14 and 188,434.81

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Solution

The fourth proportional to 425,243.17, 637,777.14 and 188,434.81 is: 282,613.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,243.17 : 637,777.14 = 188,434.81 : x
  2. Step 2: Convert to fraction form
    425,243.17/637,777.14 = 188,434.81/x
  3. Step 3: Cross multiply
    425,243.17x = 637,777.14 × 188,434.81
  4. Step 4: Simplify right side
    425,243.17x = 120,179,414,198.24
  5. Step 5: Solve for x
    x = 120,179,414,198.24/425,243.17
  6. Step 6: Final answer
    x = 282,613.39

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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.