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Finding the Fourth Proportional to 70,902.79, 97,847.93 and 39,073.73

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Solution

The fourth proportional to 70,902.79, 97,847.93 and 39,073.73 is: 53,922.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.79 : 97,847.93 = 39,073.73 : x
  2. Step 2: Convert to fraction form
    70,902.79/97,847.93 = 39,073.73/x
  3. Step 3: Cross multiply
    70,902.79x = 97,847.93 × 39,073.73
  4. Step 4: Simplify right side
    70,902.79x = 3,823,283,206.32
  5. Step 5: Solve for x
    x = 3,823,283,206.32/70,902.79
  6. Step 6: Final answer
    x = 53,922.89

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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.