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Finding the Fourth Proportional to 61,203.40, 91,805.10 and 34,910.80

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Solution

The fourth proportional to 61,203.40, 91,805.10 and 34,910.80 is: 52,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,203.40 : 91,805.10 = 34,910.80 : x
  2. Step 2: Convert to fraction form
    61,203.40/91,805.10 = 34,910.80/x
  3. Step 3: Cross multiply
    61,203.40x = 91,805.10 × 34,910.80
  4. Step 4: Simplify right side
    61,203.40x = 3,204,989,485.08
  5. Step 5: Solve for x
    x = 3,204,989,485.08/61,203.40
  6. Step 6: Final answer
    x = 52,366.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.