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Finding the Fourth Proportional to 100,353.78, 151,441.20 and 97,007.58

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Solution

The fourth proportional to 100,353.78, 151,441.20 and 97,007.58 is: 146,391.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,353.78 : 151,441.20 = 97,007.58 : x
  2. Step 2: Convert to fraction form
    100,353.78/151,441.20 = 97,007.58/x
  3. Step 3: Cross multiply
    100,353.78x = 151,441.20 × 97,007.58
  4. Step 4: Simplify right side
    100,353.78x = 14,690,944,324.30
  5. Step 5: Solve for x
    x = 14,690,944,324.30/100,353.78
  6. Step 6: Final answer
    x = 146,391.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.