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Finding the Fourth Proportional to 17,287.80, 25,931.70 and 16,020.60

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Solution

The fourth proportional to 17,287.80, 25,931.70 and 16,020.60 is: 24,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,287.80 : 25,931.70 = 16,020.60 : x
  2. Step 2: Convert to fraction form
    17,287.80/25,931.70 = 16,020.60/x
  3. Step 3: Cross multiply
    17,287.80x = 25,931.70 × 16,020.60
  4. Step 4: Simplify right side
    17,287.80x = 415,441,393.02
  5. Step 5: Solve for x
    x = 415,441,393.02/17,287.80
  6. Step 6: Final answer
    x = 24,030.90

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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.