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Finding the Fourth Proportional to 117,679.20, 176,594.40 and 65,126.40

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Solution

The fourth proportional to 117,679.20, 176,594.40 and 65,126.40 is: 97,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,679.20 : 176,594.40 = 65,126.40 : x
  2. Step 2: Convert to fraction form
    117,679.20/176,594.40 = 65,126.40/x
  3. Step 3: Cross multiply
    117,679.20x = 176,594.40 × 65,126.40
  4. Step 4: Simplify right side
    117,679.20x = 11,500,957,532.16
  5. Step 5: Solve for x
    x = 11,500,957,532.16/117,679.20
  6. Step 6: Final answer
    x = 97,731.44

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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.