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Finding the Fourth Proportional to 109,806.60, 164,612.70 and 97,996.80

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Solution

The fourth proportional to 109,806.60, 164,612.70 and 97,996.80 is: 146,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,806.60 : 164,612.70 = 97,996.80 : x
  2. Step 2: Convert to fraction form
    109,806.60/164,612.70 = 97,996.80/x
  3. Step 3: Cross multiply
    109,806.60x = 164,612.70 × 97,996.80
  4. Step 4: Simplify right side
    109,806.60x = 16,131,517,839.36
  5. Step 5: Solve for x
    x = 16,131,517,839.36/109,806.60
  6. Step 6: Final answer
    x = 146,908.45

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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.