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Finding the Fourth Proportional to 139,603.84, 192,633.60 and 83,037.76

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Solution

The fourth proportional to 139,603.84, 192,633.60 and 83,037.76 is: 114,580.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,603.84 : 192,633.60 = 83,037.76 : x
  2. Step 2: Convert to fraction form
    139,603.84/192,633.60 = 83,037.76/x
  3. Step 3: Cross multiply
    139,603.84x = 192,633.60 × 83,037.76
  4. Step 4: Simplify right side
    139,603.84x = 15,995,862,644.74
  5. Step 5: Solve for x
    x = 15,995,862,644.74/139,603.84
  6. Step 6: Final answer
    x = 114,580.39

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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.