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Finding the Fourth Proportional to 61,609.20, 85,020.78 and 33,314.94

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Solution

The fourth proportional to 61,609.20, 85,020.78 and 33,314.94 is: 45,974.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,609.20 : 85,020.78 = 33,314.94 : x
  2. Step 2: Convert to fraction form
    61,609.20/85,020.78 = 33,314.94/x
  3. Step 3: Cross multiply
    61,609.20x = 85,020.78 × 33,314.94
  4. Step 4: Simplify right side
    61,609.20x = 2,832,462,184.45
  5. Step 5: Solve for x
    x = 2,832,462,184.45/61,609.20
  6. Step 6: Final answer
    x = 45,974.66

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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.