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Finding the Fourth Proportional to 61,385.04, 91,988.46 and 33,281.28

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Solution

The fourth proportional to 61,385.04, 91,988.46 and 33,281.28 is: 49,873.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,385.04 : 91,988.46 = 33,281.28 : x
  2. Step 2: Convert to fraction form
    61,385.04/91,988.46 = 33,281.28/x
  3. Step 3: Cross multiply
    61,385.04x = 91,988.46 × 33,281.28
  4. Step 4: Simplify right side
    61,385.04x = 3,061,493,694.03
  5. Step 5: Solve for x
    x = 3,061,493,694.03/61,385.04
  6. Step 6: Final answer
    x = 49,873.61

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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.