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Finding the Fourth Proportional to 18,735.34, 28,094.77 and 9,968.17

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Solution

The fourth proportional to 18,735.34, 28,094.77 and 9,968.17 is: 14,947.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.34 : 28,094.77 = 9,968.17 : x
  2. Step 2: Convert to fraction form
    18,735.34/28,094.77 = 9,968.17/x
  3. Step 3: Cross multiply
    18,735.34x = 28,094.77 × 9,968.17
  4. Step 4: Simplify right side
    18,735.34x = 280,053,253.16
  5. Step 5: Solve for x
    x = 280,053,253.16/18,735.34
  6. Step 6: Final answer
    x = 14,947.86

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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.