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Finding the Fourth Proportional to 67,238.80, 100,858.20 and 59,657.20

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Solution

The fourth proportional to 67,238.80, 100,858.20 and 59,657.20 is: 89,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,238.80 : 100,858.20 = 59,657.20 : x
  2. Step 2: Convert to fraction form
    67,238.80/100,858.20 = 59,657.20/x
  3. Step 3: Cross multiply
    67,238.80x = 100,858.20 × 59,657.20
  4. Step 4: Simplify right side
    67,238.80x = 6,016,917,809.04
  5. Step 5: Solve for x
    x = 6,016,917,809.04/67,238.80
  6. Step 6: Final answer
    x = 89,485.80

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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.