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Finding the Fourth Proportional to 109,410.20, 150,986.04 and 59,109.20

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Solution

The fourth proportional to 109,410.20, 150,986.04 and 59,109.20 is: 81,570.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,410.20 : 150,986.04 = 59,109.20 : x
  2. Step 2: Convert to fraction form
    109,410.20/150,986.04 = 59,109.20/x
  3. Step 3: Cross multiply
    109,410.20x = 150,986.04 × 59,109.20
  4. Step 4: Simplify right side
    109,410.20x = 8,924,664,035.57
  5. Step 5: Solve for x
    x = 8,924,664,035.57/109,410.20
  6. Step 6: Final answer
    x = 81,570.68

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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.