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Finding the Fourth Proportional to 70,889.65, 97,828.05 and 39,058.47

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Solution

The fourth proportional to 70,889.65, 97,828.05 and 39,058.47 is: 53,900.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,889.65 : 97,828.05 = 39,058.47 : x
  2. Step 2: Convert to fraction form
    70,889.65/97,828.05 = 39,058.47/x
  3. Step 3: Cross multiply
    70,889.65x = 97,828.05 × 39,058.47
  4. Step 4: Simplify right side
    70,889.65x = 3,821,014,102.55
  5. Step 5: Solve for x
    x = 3,821,014,102.55/70,889.65
  6. Step 6: Final answer
    x = 53,900.88

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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.