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Finding the Fourth Proportional to 70,532, 96,629.92 and 67,875.20

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Solution

The fourth proportional to 70,532, 96,629.92 and 67,875.20 is: 92,990.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,532 : 96,629.92 = 67,875.20 : x
  2. Step 2: Convert to fraction form
    70,532/96,629.92 = 67,875.20/x
  3. Step 3: Cross multiply
    70,532x = 96,629.92 × 67,875.20
  4. Step 4: Simplify right side
    70,532x = 6,558,775,145.98
  5. Step 5: Solve for x
    x = 6,558,775,145.98/70,532
  6. Step 6: Final answer
    x = 92,990.06

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.