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Finding the Fourth Proportional to 100,093.52, 138,118.16 and 59,801.69

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Solution

The fourth proportional to 100,093.52, 138,118.16 and 59,801.69 is: 82,519.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,093.52 : 138,118.16 = 59,801.69 : x
  2. Step 2: Convert to fraction form
    100,093.52/138,118.16 = 59,801.69/x
  3. Step 3: Cross multiply
    100,093.52x = 138,118.16 × 59,801.69
  4. Step 4: Simplify right side
    100,093.52x = 8,259,699,882.49
  5. Step 5: Solve for x
    x = 8,259,699,882.49/100,093.52
  6. Step 6: Final answer
    x = 82,519.82

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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.