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Finding the Fourth Proportional to 101,295.64, 139,765.53 and 58,272.49

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Solution

The fourth proportional to 101,295.64, 139,765.53 and 58,272.49 is: 80,403.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,295.64 : 139,765.53 = 58,272.49 : x
  2. Step 2: Convert to fraction form
    101,295.64/139,765.53 = 58,272.49/x
  3. Step 3: Cross multiply
    101,295.64x = 139,765.53 × 58,272.49
  4. Step 4: Simplify right side
    101,295.64x = 8,144,485,449.27
  5. Step 5: Solve for x
    x = 8,144,485,449.27/101,295.64
  6. Step 6: Final answer
    x = 80,403.12

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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.