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Finding the Fourth Proportional to 84,504.64, 126,758.64 and 25,341.28

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Solution

The fourth proportional to 84,504.64, 126,758.64 and 25,341.28 is: 38,012.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,504.64 : 126,758.64 = 25,341.28 : x
  2. Step 2: Convert to fraction form
    84,504.64/126,758.64 = 25,341.28/x
  3. Step 3: Cross multiply
    84,504.64x = 126,758.64 × 25,341.28
  4. Step 4: Simplify right side
    84,504.64x = 3,212,226,188.66
  5. Step 5: Solve for x
    x = 3,212,226,188.66/84,504.64
  6. Step 6: Final answer
    x = 38,012.42

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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.