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Finding the Fourth Proportional to 8,906.52, 12,291.20 and 4,927.70

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Solution

The fourth proportional to 8,906.52, 12,291.20 and 4,927.70 is: 6,800.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.52 : 12,291.20 = 4,927.70 : x
  2. Step 2: Convert to fraction form
    8,906.52/12,291.20 = 4,927.70/x
  3. Step 3: Cross multiply
    8,906.52x = 12,291.20 × 4,927.70
  4. Step 4: Simplify right side
    8,906.52x = 60,567,346.24
  5. Step 5: Solve for x
    x = 60,567,346.24/8,906.52
  6. Step 6: Final answer
    x = 6,800.34

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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.