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Finding the Fourth Proportional to 125,766.90, 173,507.08 and 71,307.58

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Solution

The fourth proportional to 125,766.90, 173,507.08 and 71,307.58 is: 98,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,766.90 : 173,507.08 = 71,307.58 : x
  2. Step 2: Convert to fraction form
    125,766.90/173,507.08 = 71,307.58/x
  3. Step 3: Cross multiply
    125,766.90x = 173,507.08 × 71,307.58
  4. Step 4: Simplify right side
    125,766.90x = 12,372,369,987.67
  5. Step 5: Solve for x
    x = 12,372,369,987.67/125,766.90
  6. Step 6: Final answer
    x = 98,375.41

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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.