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Finding the Fourth Proportional to 383,113.72, 528,676.23 and 211,025.98

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Solution

The fourth proportional to 383,113.72, 528,676.23 and 211,025.98 is: 291,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,113.72 : 528,676.23 = 211,025.98 : x
  2. Step 2: Convert to fraction form
    383,113.72/528,676.23 = 211,025.98/x
  3. Step 3: Cross multiply
    383,113.72x = 528,676.23 × 211,025.98
  4. Step 4: Simplify right side
    383,113.72x = 111,564,419,538.46
  5. Step 5: Solve for x
    x = 111,564,419,538.46/383,113.72
  6. Step 6: Final answer
    x = 291,204.45

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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.