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Finding the Fourth Proportional to 69,698.72, 96,188.97 and 39,484.28

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Solution

The fourth proportional to 69,698.72, 96,188.97 and 39,484.28 is: 54,490.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,698.72 : 96,188.97 = 39,484.28 : x
  2. Step 2: Convert to fraction form
    69,698.72/96,188.97 = 39,484.28/x
  3. Step 3: Cross multiply
    69,698.72x = 96,188.97 × 39,484.28
  4. Step 4: Simplify right side
    69,698.72x = 3,797,951,743.45
  5. Step 5: Solve for x
    x = 3,797,951,743.45/69,698.72
  6. Step 6: Final answer
    x = 54,490.99

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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.