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Finding the Fourth Proportional to 188,600.81, 260,263.92 and 103,717.87

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Solution

The fourth proportional to 188,600.81, 260,263.92 and 103,717.87 is: 143,127.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,600.81 : 260,263.92 = 103,717.87 : x
  2. Step 2: Convert to fraction form
    188,600.81/260,263.92 = 103,717.87/x
  3. Step 3: Cross multiply
    188,600.81x = 260,263.92 × 103,717.87
  4. Step 4: Simplify right side
    188,600.81x = 26,994,019,420.25
  5. Step 5: Solve for x
    x = 26,994,019,420.25/188,600.81
  6. Step 6: Final answer
    x = 143,127.81

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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.