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Finding the Fourth Proportional to 15,968.40, 22,035.96 and 8,894.40

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Solution

The fourth proportional to 15,968.40, 22,035.96 and 8,894.40 is: 12,274.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,968.40 : 22,035.96 = 8,894.40 : x
  2. Step 2: Convert to fraction form
    15,968.40/22,035.96 = 8,894.40/x
  3. Step 3: Cross multiply
    15,968.40x = 22,035.96 × 8,894.40
  4. Step 4: Simplify right side
    15,968.40x = 195,996,642.62
  5. Step 5: Solve for x
    x = 195,996,642.62/15,968.40
  6. Step 6: Final answer
    x = 12,274.03

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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.