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Finding the Fourth Proportional to 313,939.89, 433,234.85 and 170,700.03

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Solution

The fourth proportional to 313,939.89, 433,234.85 and 170,700.03 is: 235,564.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,939.89 : 433,234.85 = 170,700.03 : x
  2. Step 2: Convert to fraction form
    313,939.89/433,234.85 = 170,700.03/x
  3. Step 3: Cross multiply
    313,939.89x = 433,234.85 × 170,700.03
  4. Step 4: Simplify right side
    313,939.89x = 73,953,201,038.55
  5. Step 5: Solve for x
    x = 73,953,201,038.55/313,939.89
  6. Step 6: Final answer
    x = 235,564.84

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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.