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Finding the Fourth Proportional to 7,906.78, 10,898.79 and 6,225.52

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Solution

The fourth proportional to 7,906.78, 10,898.79 and 6,225.52 is: 8,581.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.78 : 10,898.79 = 6,225.52 : x
  2. Step 2: Convert to fraction form
    7,906.78/10,898.79 = 6,225.52/x
  3. Step 3: Cross multiply
    7,906.78x = 10,898.79 × 6,225.52
  4. Step 4: Simplify right side
    7,906.78x = 67,850,635.12
  5. Step 5: Solve for x
    x = 67,850,635.12/7,906.78
  6. Step 6: Final answer
    x = 8,581.32

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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.