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Finding the Fourth Proportional to 17,968.80, 26,953.20 and 9,220.80

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Solution

The fourth proportional to 17,968.80, 26,953.20 and 9,220.80 is: 13,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,968.80 : 26,953.20 = 9,220.80 : x
  2. Step 2: Convert to fraction form
    17,968.80/26,953.20 = 9,220.80/x
  3. Step 3: Cross multiply
    17,968.80x = 26,953.20 × 9,220.80
  4. Step 4: Simplify right side
    17,968.80x = 248,530,066.56
  5. Step 5: Solve for x
    x = 248,530,066.56/17,968.80
  6. Step 6: Final answer
    x = 13,831.20

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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.