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Finding the Fourth Proportional to 139,165.66, 191,930.16 and 96,825.34

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Solution

The fourth proportional to 139,165.66, 191,930.16 and 96,825.34 is: 133,536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,165.66 : 191,930.16 = 96,825.34 : x
  2. Step 2: Convert to fraction form
    139,165.66/191,930.16 = 96,825.34/x
  3. Step 3: Cross multiply
    139,165.66x = 191,930.16 × 96,825.34
  4. Step 4: Simplify right side
    139,165.66x = 18,583,703,056.62
  5. Step 5: Solve for x
    x = 18,583,703,056.62/139,165.66
  6. Step 6: Final answer
    x = 133,536.56

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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.