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Finding the Fourth Proportional to 139,236.77, 192,147.11 and 75,574.57

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Solution

The fourth proportional to 139,236.77, 192,147.11 and 75,574.57 is: 104,293.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,236.77 : 192,147.11 = 75,574.57 : x
  2. Step 2: Convert to fraction form
    139,236.77/192,147.11 = 75,574.57/x
  3. Step 3: Cross multiply
    139,236.77x = 192,147.11 × 75,574.57
  4. Step 4: Simplify right side
    139,236.77x = 14,521,435,214.99
  5. Step 5: Solve for x
    x = 14,521,435,214.99/139,236.77
  6. Step 6: Final answer
    x = 104,293.11

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1.5x scale

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.