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Finding the Fourth Proportional to 70,676.48, 105,945.60 and 29,153.28

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Solution

The fourth proportional to 70,676.48, 105,945.60 and 29,153.28 is: 43,701.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,676.48 : 105,945.60 = 29,153.28 : x
  2. Step 2: Convert to fraction form
    70,676.48/105,945.60 = 29,153.28/x
  3. Step 3: Cross multiply
    70,676.48x = 105,945.60 × 29,153.28
  4. Step 4: Simplify right side
    70,676.48x = 3,088,661,741.57
  5. Step 5: Solve for x
    x = 3,088,661,741.57/70,676.48
  6. Step 6: Final answer
    x = 43,701.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.