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Finding the Fourth Proportional to 9,853.92, 14,791.20 and 4,929.12

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Solution

The fourth proportional to 9,853.92, 14,791.20 and 4,929.12 is: 7,398.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,853.92 : 14,791.20 = 4,929.12 : x
  2. Step 2: Convert to fraction form
    9,853.92/14,791.20 = 4,929.12/x
  3. Step 3: Cross multiply
    9,853.92x = 14,791.20 × 4,929.12
  4. Step 4: Simplify right side
    9,853.92x = 72,907,599.74
  5. Step 5: Solve for x
    x = 72,907,599.74/9,853.92
  6. Step 6: Final answer
    x = 7,398.84

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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.