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Finding the Fourth Proportional to 125,552.78, 173,220.60 and 71,097.50

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Solution

The fourth proportional to 125,552.78, 173,220.60 and 71,097.50 is: 98,090.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,552.78 : 173,220.60 = 71,097.50 : x
  2. Step 2: Convert to fraction form
    125,552.78/173,220.60 = 71,097.50/x
  3. Step 3: Cross multiply
    125,552.78x = 173,220.60 × 71,097.50
  4. Step 4: Simplify right side
    125,552.78x = 12,315,551,608.50
  5. Step 5: Solve for x
    x = 12,315,551,608.50/125,552.78
  6. Step 6: Final answer
    x = 98,090.63

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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.