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Finding the Fourth Proportional to 1,107,680.55, 1,661,520.83 and 1,107,680.55

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Solution

The fourth proportional to 1,107,680.55, 1,661,520.83 and 1,107,680.55 is: 1,661,520.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,680.55 : 1,661,520.83 = 1,107,680.55 : x
  2. Step 2: Convert to fraction form
    1,107,680.55/1,661,520.83 = 1,107,680.55/x
  3. Step 3: Cross multiply
    1,107,680.55x = 1,661,520.83 × 1,107,680.55
  4. Step 4: Simplify right side
    1,107,680.55x = 1,840,434,301,272.45
  5. Step 5: Solve for x
    x = 1,840,434,301,272.45/1,107,680.55
  6. Step 6: Final answer
    x = 1,661,520.83

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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.