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Finding the Fourth Proportional to 124,978.44, 172,473.22 and 71,268.60

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Solution

The fourth proportional to 124,978.44, 172,473.22 and 71,268.60 is: 98,352.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,978.44 : 172,473.22 = 71,268.60 : x
  2. Step 2: Convert to fraction form
    124,978.44/172,473.22 = 71,268.60/x
  3. Step 3: Cross multiply
    124,978.44x = 172,473.22 × 71,268.60
  4. Step 4: Simplify right side
    124,978.44x = 12,291,924,926.89
  5. Step 5: Solve for x
    x = 12,291,924,926.89/124,978.44
  6. Step 6: Final answer
    x = 98,352.36

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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.