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Finding the Fourth Proportional to 70,883.78, 97,819.99 and 39,054.56

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Solution

The fourth proportional to 70,883.78, 97,819.99 and 39,054.56 is: 53,895.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,883.78 : 97,819.99 = 39,054.56 : x
  2. Step 2: Convert to fraction form
    70,883.78/97,819.99 = 39,054.56/x
  3. Step 3: Cross multiply
    70,883.78x = 97,819.99 × 39,054.56
  4. Step 4: Simplify right side
    70,883.78x = 3,820,316,081.92
  5. Step 5: Solve for x
    x = 3,820,316,081.92/70,883.78
  6. Step 6: Final answer
    x = 53,895.49

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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.