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Finding the Fourth Proportional to 72,562.79, 108,816.22 and 28,183.70

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Solution

The fourth proportional to 72,562.79, 108,816.22 and 28,183.70 is: 42,264.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,562.79 : 108,816.22 = 28,183.70 : x
  2. Step 2: Convert to fraction form
    72,562.79/108,816.22 = 28,183.70/x
  3. Step 3: Cross multiply
    72,562.79x = 108,816.22 × 28,183.70
  4. Step 4: Simplify right side
    72,562.79x = 3,066,843,085.07
  5. Step 5: Solve for x
    x = 3,066,843,085.07/72,562.79
  6. Step 6: Final answer
    x = 42,264.68

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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.