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Finding the Fourth Proportional to 96,908.10, 145,362.15 and 70,469.70

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Solution

The fourth proportional to 96,908.10, 145,362.15 and 70,469.70 is: 105,704.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,908.10 : 145,362.15 = 70,469.70 : x
  2. Step 2: Convert to fraction form
    96,908.10/145,362.15 = 70,469.70/x
  3. Step 3: Cross multiply
    96,908.10x = 145,362.15 × 70,469.70
  4. Step 4: Simplify right side
    96,908.10x = 10,243,627,101.86
  5. Step 5: Solve for x
    x = 10,243,627,101.86/96,908.10
  6. Step 6: Final answer
    x = 105,704.55

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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.