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Finding the Fourth Proportional to 407,083.72, 561,842.81 and 225,854.02

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Solution

The fourth proportional to 407,083.72, 561,842.81 and 225,854.02 is: 311,715.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,083.72 : 561,842.81 = 225,854.02 : x
  2. Step 2: Convert to fraction form
    407,083.72/561,842.81 = 225,854.02/x
  3. Step 3: Cross multiply
    407,083.72x = 561,842.81 × 225,854.02
  4. Step 4: Simplify right side
    407,083.72x = 126,894,457,246.60
  5. Step 5: Solve for x
    x = 126,894,457,246.60/407,083.72
  6. Step 6: Final answer
    x = 311,715.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.