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Finding the Fourth Proportional to 32,661.80, 45,074.50 and 18,515.88

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Solution

The fourth proportional to 32,661.80, 45,074.50 and 18,515.88 is: 25,552.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,661.80 : 45,074.50 = 18,515.88 : x
  2. Step 2: Convert to fraction form
    32,661.80/45,074.50 = 18,515.88/x
  3. Step 3: Cross multiply
    32,661.80x = 45,074.50 × 18,515.88
  4. Step 4: Simplify right side
    32,661.80x = 834,594,033.06
  5. Step 5: Solve for x
    x = 834,594,033.06/32,661.80
  6. Step 6: Final answer
    x = 25,552.60

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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.