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Finding the Fourth Proportional to 414,555.74, 621,833.64 and 115,036.40

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Solution

The fourth proportional to 414,555.74, 621,833.64 and 115,036.40 is: 172,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,555.74 : 621,833.64 = 115,036.40 : x
  2. Step 2: Convert to fraction form
    414,555.74/621,833.64 = 115,036.40/x
  3. Step 3: Cross multiply
    414,555.74x = 621,833.64 × 115,036.40
  4. Step 4: Simplify right side
    414,555.74x = 71,533,503,344.50
  5. Step 5: Solve for x
    x = 71,533,503,344.50/414,555.74
  6. Step 6: Final answer
    x = 172,554.61

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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.