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Finding the Fourth Proportional to 125,069.76, 172,620.76 and 97,791.95

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Solution

The fourth proportional to 125,069.76, 172,620.76 and 97,791.95 is: 134,972.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,069.76 : 172,620.76 = 97,791.95 : x
  2. Step 2: Convert to fraction form
    125,069.76/172,620.76 = 97,791.95/x
  3. Step 3: Cross multiply
    125,069.76x = 172,620.76 × 97,791.95
  4. Step 4: Simplify right side
    125,069.76x = 16,880,920,730.88
  5. Step 5: Solve for x
    x = 16,880,920,730.88/125,069.76
  6. Step 6: Final answer
    x = 134,972.04

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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.