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Finding the Fourth Proportional to 70,072.79, 96,805.79 and 45,931.04

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Solution

The fourth proportional to 70,072.79, 96,805.79 and 45,931.04 is: 63,453.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,072.79 : 96,805.79 = 45,931.04 : x
  2. Step 2: Convert to fraction form
    70,072.79/96,805.79 = 45,931.04/x
  3. Step 3: Cross multiply
    70,072.79x = 96,805.79 × 45,931.04
  4. Step 4: Simplify right side
    70,072.79x = 4,446,389,899.04
  5. Step 5: Solve for x
    x = 4,446,389,899.04/70,072.79
  6. Step 6: Final answer
    x = 63,453.88

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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.