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Finding the Fourth Proportional to 109,872.90, 154,133.10 and 109,872.90

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Solution

The fourth proportional to 109,872.90, 154,133.10 and 109,872.90 is: 154,133.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,872.90 : 154,133.10 = 109,872.90 : x
  2. Step 2: Convert to fraction form
    109,872.90/154,133.10 = 109,872.90/x
  3. Step 3: Cross multiply
    109,872.90x = 154,133.10 × 109,872.90
  4. Step 4: Simplify right side
    109,872.90x = 16,935,050,682.99
  5. Step 5: Solve for x
    x = 16,935,050,682.99/109,872.90
  6. Step 6: Final answer
    x = 154,133.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.