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Finding the Fourth Proportional to 118,045.95, 162,851.34 and 79,791.54

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Solution

The fourth proportional to 118,045.95, 162,851.34 and 79,791.54 is: 110,077.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,045.95 : 162,851.34 = 79,791.54 : x
  2. Step 2: Convert to fraction form
    118,045.95/162,851.34 = 79,791.54/x
  3. Step 3: Cross multiply
    118,045.95x = 162,851.34 × 79,791.54
  4. Step 4: Simplify right side
    118,045.95x = 12,994,159,209.66
  5. Step 5: Solve for x
    x = 12,994,159,209.66/118,045.95
  6. Step 6: Final answer
    x = 110,077.13

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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.