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Finding the Fourth Proportional to 7,893.76, 10,892.62 and 4,356.75

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Solution

The fourth proportional to 7,893.76, 10,892.62 and 4,356.75 is: 6,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.76 : 10,892.62 = 4,356.75 : x
  2. Step 2: Convert to fraction form
    7,893.76/10,892.62 = 4,356.75/x
  3. Step 3: Cross multiply
    7,893.76x = 10,892.62 × 4,356.75
  4. Step 4: Simplify right side
    7,893.76x = 47,456,422.19
  5. Step 5: Solve for x
    x = 47,456,422.19/7,893.76
  6. Step 6: Final answer
    x = 6,011.89

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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.