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Finding the Fourth Proportional to 85,074.80, 127,613.80 and 37,038.56

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Solution

The fourth proportional to 85,074.80, 127,613.80 and 37,038.56 is: 55,558.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,074.80 : 127,613.80 = 37,038.56 : x
  2. Step 2: Convert to fraction form
    85,074.80/127,613.80 = 37,038.56/x
  3. Step 3: Cross multiply
    85,074.80x = 127,613.80 × 37,038.56
  4. Step 4: Simplify right side
    85,074.80x = 4,726,631,388.13
  5. Step 5: Solve for x
    x = 4,726,631,388.13/85,074.80
  6. Step 6: Final answer
    x = 55,558.54

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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.