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Finding the Fourth Proportional to 125,940.90, 173,754.48 and 71,486.58

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Solution

The fourth proportional to 125,940.90, 173,754.48 and 71,486.58 is: 98,626.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,940.90 : 173,754.48 = 71,486.58 : x
  2. Step 2: Convert to fraction form
    125,940.90/173,754.48 = 71,486.58/x
  3. Step 3: Cross multiply
    125,940.90x = 173,754.48 × 71,486.58
  4. Step 4: Simplify right side
    125,940.90x = 12,421,113,534.88
  5. Step 5: Solve for x
    x = 12,421,113,534.88/125,940.90
  6. Step 6: Final answer
    x = 98,626.53

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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.