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Finding the Fourth Proportional to 70,889.60, 97,828.80 and 39,058.04

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Solution

The fourth proportional to 70,889.60, 97,828.80 and 39,058.04 is: 53,900.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,889.60 : 97,828.80 = 39,058.04 : x
  2. Step 2: Convert to fraction form
    70,889.60/97,828.80 = 39,058.04/x
  3. Step 3: Cross multiply
    70,889.60x = 97,828.80 × 39,058.04
  4. Step 4: Simplify right side
    70,889.60x = 3,821,001,183.55
  5. Step 5: Solve for x
    x = 3,821,001,183.55/70,889.60
  6. Step 6: Final answer
    x = 53,900.73

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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.