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Finding the Fourth Proportional to 125,732.66, 173,480.60 and 79,775.52

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Solution

The fourth proportional to 125,732.66, 173,480.60 and 79,775.52 is: 110,070.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,732.66 : 173,480.60 = 79,775.52 : x
  2. Step 2: Convert to fraction form
    125,732.66/173,480.60 = 79,775.52/x
  3. Step 3: Cross multiply
    125,732.66x = 173,480.60 × 79,775.52
  4. Step 4: Simplify right side
    125,732.66x = 13,839,504,623.80
  5. Step 5: Solve for x
    x = 13,839,504,623.80/125,732.66
  6. Step 6: Final answer
    x = 110,070.89

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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.