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Finding the Fourth Proportional to 66,593.92, 91,903.86 and 38,299

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Solution

The fourth proportional to 66,593.92, 91,903.86 and 38,299 is: 52,855.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,593.92 : 91,903.86 = 38,299 : x
  2. Step 2: Convert to fraction form
    66,593.92/91,903.86 = 38,299/x
  3. Step 3: Cross multiply
    66,593.92x = 91,903.86 × 38,299
  4. Step 4: Simplify right side
    66,593.92x = 3,519,825,934.14
  5. Step 5: Solve for x
    x = 3,519,825,934.14/66,593.92
  6. Step 6: Final answer
    x = 52,855.06

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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.