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Finding the Fourth Proportional to 85,057.34, 127,345.97 and 44,985.53

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Solution

The fourth proportional to 85,057.34, 127,345.97 and 44,985.53 is: 67,351.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,057.34 : 127,345.97 = 44,985.53 : x
  2. Step 2: Convert to fraction form
    85,057.34/127,345.97 = 44,985.53/x
  3. Step 3: Cross multiply
    85,057.34x = 127,345.97 × 44,985.53
  4. Step 4: Simplify right side
    85,057.34x = 5,728,725,668.32
  5. Step 5: Solve for x
    x = 5,728,725,668.32/85,057.34
  6. Step 6: Final answer
    x = 67,351.34

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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.