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Finding the Fourth Proportional to 118,044.95, 162,849.96 and 79,790.54

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Solution

The fourth proportional to 118,044.95, 162,849.96 and 79,790.54 is: 110,075.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,044.95 : 162,849.96 = 79,790.54 : x
  2. Step 2: Convert to fraction form
    118,044.95/162,849.96 = 79,790.54/x
  3. Step 3: Cross multiply
    118,044.95x = 162,849.96 × 79,790.54
  4. Step 4: Simplify right side
    118,044.95x = 12,993,885,433.13
  5. Step 5: Solve for x
    x = 12,993,885,433.13/118,044.95
  6. Step 6: Final answer
    x = 110,075.75

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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.