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Finding the Fourth Proportional to 11,798.92, 17,698.20 and 3,479.50

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Solution

The fourth proportional to 11,798.92, 17,698.20 and 3,479.50 is: 5,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,798.92 : 17,698.20 = 3,479.50 : x
  2. Step 2: Convert to fraction form
    11,798.92/17,698.20 = 3,479.50/x
  3. Step 3: Cross multiply
    11,798.92x = 17,698.20 × 3,479.50
  4. Step 4: Simplify right side
    11,798.92x = 61,580,886.90
  5. Step 5: Solve for x
    x = 61,580,886.90/11,798.92
  6. Step 6: Final answer
    x = 5,219.20

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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.