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Finding the Fourth Proportional to 72,792.55, 108,535.62 and 71,463.95

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Solution

The fourth proportional to 72,792.55, 108,535.62 and 71,463.95 is: 106,554.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,792.55 : 108,535.62 = 71,463.95 : x
  2. Step 2: Convert to fraction form
    72,792.55/108,535.62 = 71,463.95/x
  3. Step 3: Cross multiply
    72,792.55x = 108,535.62 × 71,463.95
  4. Step 4: Simplify right side
    72,792.55x = 7,756,383,578.22
  5. Step 5: Solve for x
    x = 7,756,383,578.22/72,792.55
  6. Step 6: Final answer
    x = 106,554.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.