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Finding the Fourth Proportional to 70,112.67, 96,764.65 and 39,892.12

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Solution

The fourth proportional to 70,112.67, 96,764.65 and 39,892.12 is: 55,056.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,112.67 : 96,764.65 = 39,892.12 : x
  2. Step 2: Convert to fraction form
    70,112.67/96,764.65 = 39,892.12/x
  3. Step 3: Cross multiply
    70,112.67x = 96,764.65 × 39,892.12
  4. Step 4: Simplify right side
    70,112.67x = 3,860,146,687.92
  5. Step 5: Solve for x
    x = 3,860,146,687.92/70,112.67
  6. Step 6: Final answer
    x = 55,056.34

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1.5x scale

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.