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Finding the Fourth Proportional to 114,916.80, 172,391.40 and 36,022.80

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Solution

The fourth proportional to 114,916.80, 172,391.40 and 36,022.80 is: 54,039.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,916.80 : 172,391.40 = 36,022.80 : x
  2. Step 2: Convert to fraction form
    114,916.80/172,391.40 = 36,022.80/x
  3. Step 3: Cross multiply
    114,916.80x = 172,391.40 × 36,022.80
  4. Step 4: Simplify right side
    114,916.80x = 6,210,020,923.92
  5. Step 5: Solve for x
    x = 6,210,020,923.92/114,916.80
  6. Step 6: Final answer
    x = 54,039.28

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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.