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Finding the Fourth Proportional to 114,646.49, 171,879.29 and 72,437.61

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Solution

The fourth proportional to 114,646.49, 171,879.29 and 72,437.61 is: 108,599.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,646.49 : 171,879.29 = 72,437.61 : x
  2. Step 2: Convert to fraction form
    114,646.49/171,879.29 = 72,437.61/x
  3. Step 3: Cross multiply
    114,646.49x = 171,879.29 × 72,437.61
  4. Step 4: Simplify right side
    114,646.49x = 12,450,524,613.91
  5. Step 5: Solve for x
    x = 12,450,524,613.91/114,646.49
  6. Step 6: Final answer
    x = 108,599.27

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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.