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Finding the Fourth Proportional to 414,606.72, 621,954.52 and 115,088.58

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Solution

The fourth proportional to 414,606.72, 621,954.52 and 115,088.58 is: 172,645.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,606.72 : 621,954.52 = 115,088.58 : x
  2. Step 2: Convert to fraction form
    414,606.72/621,954.52 = 115,088.58/x
  3. Step 3: Cross multiply
    414,606.72x = 621,954.52 × 115,088.58
  4. Step 4: Simplify right side
    414,606.72x = 71,579,862,531.38
  5. Step 5: Solve for x
    x = 71,579,862,531.38/414,606.72
  6. Step 6: Final answer
    x = 172,645.21

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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.