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Finding the Fourth Proportional to 139,697.04, 192,782.39 and 76,034.69

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Solution

The fourth proportional to 139,697.04, 192,782.39 and 76,034.69 is: 104,928.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,697.04 : 192,782.39 = 76,034.69 : x
  2. Step 2: Convert to fraction form
    139,697.04/192,782.39 = 76,034.69/x
  3. Step 3: Cross multiply
    139,697.04x = 192,782.39 × 76,034.69
  4. Step 4: Simplify right side
    139,697.04x = 14,658,149,261.11
  5. Step 5: Solve for x
    x = 14,658,149,261.11/139,697.04
  6. Step 6: Final answer
    x = 104,928.13

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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.