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Finding the Fourth Proportional to 7,194.24, 9,929.36 and 4,209.92

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Solution

The fourth proportional to 7,194.24, 9,929.36 and 4,209.92 is: 5,810.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,194.24 : 9,929.36 = 4,209.92 : x
  2. Step 2: Convert to fraction form
    7,194.24/9,929.36 = 4,209.92/x
  3. Step 3: Cross multiply
    7,194.24x = 9,929.36 × 4,209.92
  4. Step 4: Simplify right side
    7,194.24x = 41,801,811.25
  5. Step 5: Solve for x
    x = 41,801,811.25/7,194.24
  6. Step 6: Final answer
    x = 5,810.46

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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.