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Finding the Fourth Proportional to 101,448.37, 139,995.37 and 56,126.44

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Solution

The fourth proportional to 101,448.37, 139,995.37 and 56,126.44 is: 77,452.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,448.37 : 139,995.37 = 56,126.44 : x
  2. Step 2: Convert to fraction form
    101,448.37/139,995.37 = 56,126.44/x
  3. Step 3: Cross multiply
    101,448.37x = 139,995.37 × 56,126.44
  4. Step 4: Simplify right side
    101,448.37x = 7,857,441,734.58
  5. Step 5: Solve for x
    x = 7,857,441,734.58/101,448.37
  6. Step 6: Final answer
    x = 77,452.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.