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Finding the Fourth Proportional to 462,813.72, 638,674.48 and 261,609.72

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Solution

The fourth proportional to 462,813.72, 638,674.48 and 261,609.72 is: 361,016.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,813.72 : 638,674.48 = 261,609.72 : x
  2. Step 2: Convert to fraction form
    462,813.72/638,674.48 = 261,609.72/x
  3. Step 3: Cross multiply
    462,813.72x = 638,674.48 × 261,609.72
  4. Step 4: Simplify right side
    462,813.72x = 167,083,450,575.90
  5. Step 5: Solve for x
    x = 167,083,450,575.90/462,813.72
  6. Step 6: Final answer
    x = 361,016.63

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1.5x scale

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.