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Finding the Fourth Proportional to 370,616.40, 555,935.40 and 133,917.12

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Solution

The fourth proportional to 370,616.40, 555,935.40 and 133,917.12 is: 200,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,616.40 : 555,935.40 = 133,917.12 : x
  2. Step 2: Convert to fraction form
    370,616.40/555,935.40 = 133,917.12/x
  3. Step 3: Cross multiply
    370,616.40x = 555,935.40 × 133,917.12
  4. Step 4: Simplify right side
    370,616.40x = 74,449,267,674.05
  5. Step 5: Solve for x
    x = 74,449,267,674.05/370,616.40
  6. Step 6: Final answer
    x = 200,879.58

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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.