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Finding the Fourth Proportional to 425,193.04, 637,790.36 and 399,211.48

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Solution

The fourth proportional to 425,193.04, 637,790.36 and 399,211.48 is: 598,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,193.04 : 637,790.36 = 399,211.48 : x
  2. Step 2: Convert to fraction form
    425,193.04/637,790.36 = 399,211.48/x
  3. Step 3: Cross multiply
    425,193.04x = 637,790.36 × 399,211.48
  4. Step 4: Simplify right side
    425,193.04x = 254,613,233,545.33
  5. Step 5: Solve for x
    x = 254,613,233,545.33/425,193.04
  6. Step 6: Final answer
    x = 598,817.97

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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.