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Finding the Fourth Proportional to 114,941.80, 172,428.90 and 36,047.80

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Solution

The fourth proportional to 114,941.80, 172,428.90 and 36,047.80 is: 54,076.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,941.80 : 172,428.90 = 36,047.80 : x
  2. Step 2: Convert to fraction form
    114,941.80/172,428.90 = 36,047.80/x
  3. Step 3: Cross multiply
    114,941.80x = 172,428.90 × 36,047.80
  4. Step 4: Simplify right side
    114,941.80x = 6,215,682,501.42
  5. Step 5: Solve for x
    x = 6,215,682,501.42/114,941.80
  6. Step 6: Final answer
    x = 54,076.78

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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.