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Finding the Fourth Proportional to 139,561.93, 192,596.40 and 75,900.19

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Solution

The fourth proportional to 139,561.93, 192,596.40 and 75,900.19 is: 104,742.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,561.93 : 192,596.40 = 75,900.19 : x
  2. Step 2: Convert to fraction form
    139,561.93/192,596.40 = 75,900.19/x
  3. Step 3: Cross multiply
    139,561.93x = 192,596.40 × 75,900.19
  4. Step 4: Simplify right side
    139,561.93x = 14,618,103,353.32
  5. Step 5: Solve for x
    x = 14,618,103,353.32/139,561.93
  6. Step 6: Final answer
    x = 104,742.77

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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.