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Finding the Fourth Proportional to 117,401.98, 176,026.36 and 77,299.56

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Solution

The fourth proportional to 117,401.98, 176,026.36 and 77,299.56 is: 115,898.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,401.98 : 176,026.36 = 77,299.56 : x
  2. Step 2: Convert to fraction form
    117,401.98/176,026.36 = 77,299.56/x
  3. Step 3: Cross multiply
    117,401.98x = 176,026.36 × 77,299.56
  4. Step 4: Simplify right side
    117,401.98x = 13,606,760,176.40
  5. Step 5: Solve for x
    x = 13,606,760,176.40/117,401.98
  6. Step 6: Final answer
    x = 115,898.90

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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.