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Finding the Fourth Proportional to 107,215.80, 160,823.70 and 80,604.60

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Solution

The fourth proportional to 107,215.80, 160,823.70 and 80,604.60 is: 120,906.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,215.80 : 160,823.70 = 80,604.60 : x
  2. Step 2: Convert to fraction form
    107,215.80/160,823.70 = 80,604.60/x
  3. Step 3: Cross multiply
    107,215.80x = 160,823.70 × 80,604.60
  4. Step 4: Simplify right side
    107,215.80x = 12,963,130,009.02
  5. Step 5: Solve for x
    x = 12,963,130,009.02/107,215.80
  6. Step 6: Final answer
    x = 120,906.90

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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.