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Finding the Fourth Proportional to 15,968.76, 22,036.92 and 9,255.68

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Solution

The fourth proportional to 15,968.76, 22,036.92 and 9,255.68 is: 12,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,968.76 : 22,036.92 = 9,255.68 : x
  2. Step 2: Convert to fraction form
    15,968.76/22,036.92 = 9,255.68/x
  3. Step 3: Cross multiply
    15,968.76x = 22,036.92 × 9,255.68
  4. Step 4: Simplify right side
    15,968.76x = 203,966,679.71
  5. Step 5: Solve for x
    x = 203,966,679.71/15,968.76
  6. Step 6: Final answer
    x = 12,772.86

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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.