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Finding the Fourth Proportional to 10,893.67, 15,028.89 and 7,902.92

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Solution

The fourth proportional to 10,893.67, 15,028.89 and 7,902.92 is: 10,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,893.67 : 15,028.89 = 7,902.92 : x
  2. Step 2: Convert to fraction form
    10,893.67/15,028.89 = 7,902.92/x
  3. Step 3: Cross multiply
    10,893.67x = 15,028.89 × 7,902.92
  4. Step 4: Simplify right side
    10,893.67x = 118,772,115.36
  5. Step 5: Solve for x
    x = 118,772,115.36/10,893.67
  6. Step 6: Final answer
    x = 10,902.86

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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.