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Finding the Fourth Proportional to 117,610.80, 176,343.30 and 67,666.20

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Solution

The fourth proportional to 117,610.80, 176,343.30 and 67,666.20 is: 101,457.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,610.80 : 176,343.30 = 67,666.20 : x
  2. Step 2: Convert to fraction form
    117,610.80/176,343.30 = 67,666.20/x
  3. Step 3: Cross multiply
    117,610.80x = 176,343.30 × 67,666.20
  4. Step 4: Simplify right side
    117,610.80x = 11,932,481,006.46
  5. Step 5: Solve for x
    x = 11,932,481,006.46/117,610.80
  6. Step 6: Final answer
    x = 101,457.36

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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.