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Finding the Fourth Proportional to 139,603.79, 192,653.08 and 75,941.43

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Solution

The fourth proportional to 139,603.79, 192,653.08 and 75,941.43 is: 104,799.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,603.79 : 192,653.08 = 75,941.43 : x
  2. Step 2: Convert to fraction form
    139,603.79/192,653.08 = 75,941.43/x
  3. Step 3: Cross multiply
    139,603.79x = 192,653.08 × 75,941.43
  4. Step 4: Simplify right side
    139,603.79x = 14,630,350,199.25
  5. Step 5: Solve for x
    x = 14,630,350,199.25/139,603.79
  6. Step 6: Final answer
    x = 104,799.09

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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.