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Finding the Fourth Proportional to 70,909.44, 97,855.04 and 38,644.06

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Solution

The fourth proportional to 70,909.44, 97,855.04 and 38,644.06 is: 53,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,909.44 : 97,855.04 = 38,644.06 : x
  2. Step 2: Convert to fraction form
    70,909.44/97,855.04 = 38,644.06/x
  3. Step 3: Cross multiply
    70,909.44x = 97,855.04 × 38,644.06
  4. Step 4: Simplify right side
    70,909.44x = 3,781,515,843.84
  5. Step 5: Solve for x
    x = 3,781,515,843.84/70,909.44
  6. Step 6: Final answer
    x = 53,328.81

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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.