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Finding the Fourth Proportional to 118,401.89, 176,739.12 and 103,454.96

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Solution

The fourth proportional to 118,401.89, 176,739.12 and 103,454.96 is: 154,427.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,401.89 : 176,739.12 = 103,454.96 : x
  2. Step 2: Convert to fraction form
    118,401.89/176,739.12 = 103,454.96/x
  3. Step 3: Cross multiply
    118,401.89x = 176,739.12 × 103,454.96
  4. Step 4: Simplify right side
    118,401.89x = 18,284,537,706.34
  5. Step 5: Solve for x
    x = 18,284,537,706.34/118,401.89
  6. Step 6: Final answer
    x = 154,427.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.