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Finding the Fourth Proportional to 67,412.25, 100,605.78 and 59,939.12

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Solution

The fourth proportional to 67,412.25, 100,605.78 and 59,939.12 is: 89,452.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,412.25 : 100,605.78 = 59,939.12 : x
  2. Step 2: Convert to fraction form
    67,412.25/100,605.78 = 59,939.12/x
  3. Step 3: Cross multiply
    67,412.25x = 100,605.78 × 59,939.12
  4. Step 4: Simplify right side
    67,412.25x = 6,030,222,171.63
  5. Step 5: Solve for x
    x = 6,030,222,171.63/67,412.25
  6. Step 6: Final answer
    x = 89,452.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.