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Finding the Fourth Proportional to 139,595.47, 192,642.20 and 75,933.25

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Solution

The fourth proportional to 139,595.47, 192,642.20 and 75,933.25 is: 104,788.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,595.47 : 192,642.20 = 75,933.25 : x
  2. Step 2: Convert to fraction form
    139,595.47/192,642.20 = 75,933.25/x
  3. Step 3: Cross multiply
    139,595.47x = 192,642.20 × 75,933.25
  4. Step 4: Simplify right side
    139,595.47x = 14,627,947,756.63
  5. Step 5: Solve for x
    x = 14,627,947,756.63/139,595.47
  6. Step 6: Final answer
    x = 104,788.13

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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.