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Finding the Fourth Proportional to 84,442.79, 126,656.88 and 25,291.73

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Solution

The fourth proportional to 84,442.79, 126,656.88 and 25,291.73 is: 37,935.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,442.79 : 126,656.88 = 25,291.73 : x
  2. Step 2: Convert to fraction form
    84,442.79/126,656.88 = 25,291.73/x
  3. Step 3: Cross multiply
    84,442.79x = 126,656.88 × 25,291.73
  4. Step 4: Simplify right side
    84,442.79x = 3,203,370,978.32
  5. Step 5: Solve for x
    x = 3,203,370,978.32/84,442.79
  6. Step 6: Final answer
    x = 37,935.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.