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Finding the Fourth Proportional to 71,322.62, 98,426.70 and 39,058.58

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Solution

The fourth proportional to 71,322.62, 98,426.70 and 39,058.58 is: 53,901.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,322.62 : 98,426.70 = 39,058.58 : x
  2. Step 2: Convert to fraction form
    71,322.62/98,426.70 = 39,058.58/x
  3. Step 3: Cross multiply
    71,322.62x = 98,426.70 × 39,058.58
  4. Step 4: Simplify right side
    71,322.62x = 3,844,407,136.09
  5. Step 5: Solve for x
    x = 3,844,407,136.09/71,322.62
  6. Step 6: Final answer
    x = 53,901.65

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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.