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Finding the Fourth Proportional to 75,244.80, 112,996.80 and 49,065.60

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Solution

The fourth proportional to 75,244.80, 112,996.80 and 49,065.60 is: 73,682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,244.80 : 112,996.80 = 49,065.60 : x
  2. Step 2: Convert to fraction form
    75,244.80/112,996.80 = 49,065.60/x
  3. Step 3: Cross multiply
    75,244.80x = 112,996.80 × 49,065.60
  4. Step 4: Simplify right side
    75,244.80x = 5,544,255,790.08
  5. Step 5: Solve for x
    x = 5,544,255,790.08/75,244.80
  6. Step 6: Final answer
    x = 73,682.91

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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.