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Finding the Fourth Proportional to 61,771.12, 85,243.80 and 33,476.80

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Solution

The fourth proportional to 61,771.12, 85,243.80 and 33,476.80 is: 46,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,771.12 : 85,243.80 = 33,476.80 : x
  2. Step 2: Convert to fraction form
    61,771.12/85,243.80 = 33,476.80/x
  3. Step 3: Cross multiply
    61,771.12x = 85,243.80 × 33,476.80
  4. Step 4: Simplify right side
    61,771.12x = 2,853,689,643.84
  5. Step 5: Solve for x
    x = 2,853,689,643.84/61,771.12
  6. Step 6: Final answer
    x = 46,197.80

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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.