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Finding the Fourth Proportional to 109,666.20, 164,499.30 and 109,666.20

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Solution

The fourth proportional to 109,666.20, 164,499.30 and 109,666.20 is: 164,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,666.20 : 164,499.30 = 109,666.20 : x
  2. Step 2: Convert to fraction form
    109,666.20/164,499.30 = 109,666.20/x
  3. Step 3: Cross multiply
    109,666.20x = 164,499.30 × 109,666.20
  4. Step 4: Simplify right side
    109,666.20x = 18,040,013,133.66
  5. Step 5: Solve for x
    x = 18,040,013,133.66/109,666.20
  6. Step 6: Final answer
    x = 164,499.30

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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.