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Finding the Fourth Proportional to 76,449.55, 114,628.91 and 29,068.11

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Solution

The fourth proportional to 76,449.55, 114,628.91 and 29,068.11 is: 43,584.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,449.55 : 114,628.91 = 29,068.11 : x
  2. Step 2: Convert to fraction form
    76,449.55/114,628.91 = 29,068.11/x
  3. Step 3: Cross multiply
    76,449.55x = 114,628.91 × 29,068.11
  4. Step 4: Simplify right side
    76,449.55x = 3,332,045,619.72
  5. Step 5: Solve for x
    x = 3,332,045,619.72/76,449.55
  6. Step 6: Final answer
    x = 43,584.89

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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.