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Finding the Fourth Proportional to 69,616.47, 96,063.39 and 39,396.99

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Solution

The fourth proportional to 69,616.47, 96,063.39 and 39,396.99 is: 54,363.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,616.47 : 96,063.39 = 39,396.99 : x
  2. Step 2: Convert to fraction form
    69,616.47/96,063.39 = 39,396.99/x
  3. Step 3: Cross multiply
    69,616.47x = 96,063.39 × 39,396.99
  4. Step 4: Simplify right side
    69,616.47x = 3,784,608,415.20
  5. Step 5: Solve for x
    x = 3,784,608,415.20/69,616.47
  6. Step 6: Final answer
    x = 54,363.69

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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.