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Finding the Fourth Proportional to 603,688.95, 905,524.11 and 154,405.85

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Solution

The fourth proportional to 603,688.95, 905,524.11 and 154,405.85 is: 231,606.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,688.95 : 905,524.11 = 154,405.85 : x
  2. Step 2: Convert to fraction form
    603,688.95/905,524.11 = 154,405.85/x
  3. Step 3: Cross multiply
    603,688.95x = 905,524.11 × 154,405.85
  4. Step 4: Simplify right side
    603,688.95x = 139,818,215,372.42
  5. Step 5: Solve for x
    x = 139,818,215,372.42/603,688.95
  6. Step 6: Final answer
    x = 231,606.38

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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.