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Finding the Fourth Proportional to 76,668.98, 115,004.00 and 26,748.88

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Solution

The fourth proportional to 76,668.98, 115,004.00 and 26,748.88 is: 40,123.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,668.98 : 115,004.00 = 26,748.88 : x
  2. Step 2: Convert to fraction form
    76,668.98/115,004.00 = 26,748.88/x
  3. Step 3: Cross multiply
    76,668.98x = 115,004.00 × 26,748.88
  4. Step 4: Simplify right side
    76,668.98x = 3,076,228,621.78
  5. Step 5: Solve for x
    x = 3,076,228,621.78/76,668.98
  6. Step 6: Final answer
    x = 40,123.51

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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.