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Finding the Fourth Proportional to 101,268.76, 139,746.66 and 58,245.01

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Solution

The fourth proportional to 101,268.76, 139,746.66 and 58,245.01 is: 80,375.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,268.76 : 139,746.66 = 58,245.01 : x
  2. Step 2: Convert to fraction form
    101,268.76/139,746.66 = 58,245.01/x
  3. Step 3: Cross multiply
    101,268.76x = 139,746.66 × 58,245.01
  4. Step 4: Simplify right side
    101,268.76x = 8,139,545,609.17
  5. Step 5: Solve for x
    x = 8,139,545,609.17/101,268.76
  6. Step 6: Final answer
    x = 80,375.68

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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.