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Finding the Fourth Proportional to 104,391.48, 144,012.42 and 61,934.52

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Solution

The fourth proportional to 104,391.48, 144,012.42 and 61,934.52 is: 85,441.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,391.48 : 144,012.42 = 61,934.52 : x
  2. Step 2: Convert to fraction form
    104,391.48/144,012.42 = 61,934.52/x
  3. Step 3: Cross multiply
    104,391.48x = 144,012.42 × 61,934.52
  4. Step 4: Simplify right side
    104,391.48x = 8,919,340,106.74
  5. Step 5: Solve for x
    x = 8,919,340,106.74/104,391.48
  6. Step 6: Final answer
    x = 85,441.27

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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.