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Finding the Fourth Proportional to 83,093.40, 124,640.10 and 66,658.20

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Solution

The fourth proportional to 83,093.40, 124,640.10 and 66,658.20 is: 99,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,093.40 : 124,640.10 = 66,658.20 : x
  2. Step 2: Convert to fraction form
    83,093.40/124,640.10 = 66,658.20/x
  3. Step 3: Cross multiply
    83,093.40x = 124,640.10 × 66,658.20
  4. Step 4: Simplify right side
    83,093.40x = 8,308,284,713.82
  5. Step 5: Solve for x
    x = 8,308,284,713.82/83,093.40
  6. Step 6: Final answer
    x = 99,987.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.