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Finding the Fourth Proportional to 117,946.60, 176,919.90 and 71,175.40

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Solution

The fourth proportional to 117,946.60, 176,919.90 and 71,175.40 is: 106,763.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,946.60 : 176,919.90 = 71,175.40 : x
  2. Step 2: Convert to fraction form
    117,946.60/176,919.90 = 71,175.40/x
  3. Step 3: Cross multiply
    117,946.60x = 176,919.90 × 71,175.40
  4. Step 4: Simplify right side
    117,946.60x = 12,592,344,650.46
  5. Step 5: Solve for x
    x = 12,592,344,650.46/117,946.60
  6. Step 6: Final answer
    x = 106,763.10

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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.