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Finding the Fourth Proportional to 15,766.76, 21,753.78 and 9,052.04

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Solution

The fourth proportional to 15,766.76, 21,753.78 and 9,052.04 is: 12,489.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.76 : 21,753.78 = 9,052.04 : x
  2. Step 2: Convert to fraction form
    15,766.76/21,753.78 = 9,052.04/x
  3. Step 3: Cross multiply
    15,766.76x = 21,753.78 × 9,052.04
  4. Step 4: Simplify right side
    15,766.76x = 196,916,086.71
  5. Step 5: Solve for x
    x = 196,916,086.71/15,766.76
  6. Step 6: Final answer
    x = 12,489.32

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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.