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Finding the Fourth Proportional to 70,995.48, 97,973.30 and 39,163.72

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Solution

The fourth proportional to 70,995.48, 97,973.30 and 39,163.72 is: 54,045.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,995.48 : 97,973.30 = 39,163.72 : x
  2. Step 2: Convert to fraction form
    70,995.48/97,973.30 = 39,163.72/x
  3. Step 3: Cross multiply
    70,995.48x = 97,973.30 × 39,163.72
  4. Step 4: Simplify right side
    70,995.48x = 3,836,998,888.68
  5. Step 5: Solve for x
    x = 3,836,998,888.68/70,995.48
  6. Step 6: Final answer
    x = 54,045.68

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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.