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Finding the Fourth Proportional to 69,811.40, 104,712.30 and 22,425.80

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Solution

The fourth proportional to 69,811.40, 104,712.30 and 22,425.80 is: 33,637.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,811.40 : 104,712.30 = 22,425.80 : x
  2. Step 2: Convert to fraction form
    69,811.40/104,712.30 = 22,425.80/x
  3. Step 3: Cross multiply
    69,811.40x = 104,712.30 × 22,425.80
  4. Step 4: Simplify right side
    69,811.40x = 2,348,257,097.34
  5. Step 5: Solve for x
    x = 2,348,257,097.34/69,811.40
  6. Step 6: Final answer
    x = 33,637.16

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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.