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Finding the Fourth Proportional to 70,489.66, 97,283.37 and 45,019.42

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Solution

The fourth proportional to 70,489.66, 97,283.37 and 45,019.42 is: 62,131.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,489.66 : 97,283.37 = 45,019.42 : x
  2. Step 2: Convert to fraction form
    70,489.66/97,283.37 = 45,019.42/x
  3. Step 3: Cross multiply
    70,489.66x = 97,283.37 × 45,019.42
  4. Step 4: Simplify right side
    70,489.66x = 4,379,640,893.05
  5. Step 5: Solve for x
    x = 4,379,640,893.05/70,489.66
  6. Step 6: Final answer
    x = 62,131.68

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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.