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Finding the Fourth Proportional to 61,203.70, 91,805.55 and 33,112.90

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Solution

The fourth proportional to 61,203.70, 91,805.55 and 33,112.90 is: 49,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,203.70 : 91,805.55 = 33,112.90 : x
  2. Step 2: Convert to fraction form
    61,203.70/91,805.55 = 33,112.90/x
  3. Step 3: Cross multiply
    61,203.70x = 91,805.55 × 33,112.90
  4. Step 4: Simplify right side
    61,203.70x = 3,039,947,996.60
  5. Step 5: Solve for x
    x = 3,039,947,996.60/61,203.70
  6. Step 6: Final answer
    x = 49,669.35

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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.