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Finding the Fourth Proportional to 19,062.80, 28,605.44 and 7,968.63

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Solution

The fourth proportional to 19,062.80, 28,605.44 and 7,968.63 is: 11,957.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,062.80 : 28,605.44 = 7,968.63 : x
  2. Step 2: Convert to fraction form
    19,062.80/28,605.44 = 7,968.63/x
  3. Step 3: Cross multiply
    19,062.80x = 28,605.44 × 7,968.63
  4. Step 4: Simplify right side
    19,062.80x = 227,946,167.35
  5. Step 5: Solve for x
    x = 227,946,167.35/19,062.80
  6. Step 6: Final answer
    x = 11,957.64

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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.