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Finding the Fourth Proportional to 96,615.78, 133,329.78 and 54,174.32

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Solution

The fourth proportional to 96,615.78, 133,329.78 and 54,174.32 is: 74,760.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,615.78 : 133,329.78 = 54,174.32 : x
  2. Step 2: Convert to fraction form
    96,615.78/133,329.78 = 54,174.32/x
  3. Step 3: Cross multiply
    96,615.78x = 133,329.78 × 54,174.32
  4. Step 4: Simplify right side
    96,615.78x = 7,223,049,500.60
  5. Step 5: Solve for x
    x = 7,223,049,500.60/96,615.78
  6. Step 6: Final answer
    x = 74,760.56

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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.