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Finding the Fourth Proportional to 70,553.60, 97,363.68 and 38,722.43

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Solution

The fourth proportional to 70,553.60, 97,363.68 and 38,722.43 is: 53,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,553.60 : 97,363.68 = 38,722.43 : x
  2. Step 2: Convert to fraction form
    70,553.60/97,363.68 = 38,722.43/x
  3. Step 3: Cross multiply
    70,553.60x = 97,363.68 × 38,722.43
  4. Step 4: Simplify right side
    70,553.60x = 3,770,158,283.34
  5. Step 5: Solve for x
    x = 3,770,158,283.34/70,553.60
  6. Step 6: Final answer
    x = 53,436.80

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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.