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Finding the Fourth Proportional to 96,670.60, 145,005.90 and 67,179.40

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Solution

The fourth proportional to 96,670.60, 145,005.90 and 67,179.40 is: 100,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,670.60 : 145,005.90 = 67,179.40 : x
  2. Step 2: Convert to fraction form
    96,670.60/145,005.90 = 67,179.40/x
  3. Step 3: Cross multiply
    96,670.60x = 145,005.90 × 67,179.40
  4. Step 4: Simplify right side
    96,670.60x = 9,741,409,358.46
  5. Step 5: Solve for x
    x = 9,741,409,358.46/96,670.60
  6. Step 6: Final answer
    x = 100,769.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.