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Finding the Fourth Proportional to 354,587.42, 489,269.43 and 199,517.11

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Solution

The fourth proportional to 354,587.42, 489,269.43 and 199,517.11 is: 275,299.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,587.42 : 489,269.43 = 199,517.11 : x
  2. Step 2: Convert to fraction form
    354,587.42/489,269.43 = 199,517.11/x
  3. Step 3: Cross multiply
    354,587.42x = 489,269.43 × 199,517.11
  4. Step 4: Simplify right side
    354,587.42x = 97,617,621,461.77
  5. Step 5: Solve for x
    x = 97,617,621,461.77/354,587.42
  6. Step 6: Final answer
    x = 275,299.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.