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Finding the Fourth Proportional to 71,052.16, 98,051.44 and 39,221.08

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Solution

The fourth proportional to 71,052.16, 98,051.44 and 39,221.08 is: 54,124.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,052.16 : 98,051.44 = 39,221.08 : x
  2. Step 2: Convert to fraction form
    71,052.16/98,051.44 = 39,221.08/x
  3. Step 3: Cross multiply
    71,052.16x = 98,051.44 × 39,221.08
  4. Step 4: Simplify right side
    71,052.16x = 3,845,683,372.36
  5. Step 5: Solve for x
    x = 3,845,683,372.36/71,052.16
  6. Step 6: Final answer
    x = 54,124.79

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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.