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Finding the Fourth Proportional to 101,051.74, 139,449.56 and 55,733.92

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Solution

The fourth proportional to 101,051.74, 139,449.56 and 55,733.92 is: 76,911.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,051.74 : 139,449.56 = 55,733.92 : x
  2. Step 2: Convert to fraction form
    101,051.74/139,449.56 = 55,733.92/x
  3. Step 3: Cross multiply
    101,051.74x = 139,449.56 × 55,733.92
  4. Step 4: Simplify right side
    101,051.74x = 7,772,070,621.08
  5. Step 5: Solve for x
    x = 7,772,070,621.08/101,051.74
  6. Step 6: Final answer
    x = 76,911.79

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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.