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Finding the Fourth Proportional to 61,513.91, 84,889.20 and 33,219.60

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Solution

The fourth proportional to 61,513.91, 84,889.20 and 33,219.60 is: 45,843.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,513.91 : 84,889.20 = 33,219.60 : x
  2. Step 2: Convert to fraction form
    61,513.91/84,889.20 = 33,219.60/x
  3. Step 3: Cross multiply
    61,513.91x = 84,889.20 × 33,219.60
  4. Step 4: Simplify right side
    61,513.91x = 2,819,985,365.20
  5. Step 5: Solve for x
    x = 2,819,985,365.20/61,513.91
  6. Step 6: Final answer
    x = 45,843.05

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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.