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Finding the Fourth Proportional to 5,779.12, 7,973.20 and 3,260.92

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Solution

The fourth proportional to 5,779.12, 7,973.20 and 3,260.92 is: 4,498.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.12 : 7,973.20 = 3,260.92 : x
  2. Step 2: Convert to fraction form
    5,779.12/7,973.20 = 3,260.92/x
  3. Step 3: Cross multiply
    5,779.12x = 7,973.20 × 3,260.92
  4. Step 4: Simplify right side
    5,779.12x = 25,999,919.33
  5. Step 5: Solve for x
    x = 25,999,919.33/5,779.12
  6. Step 6: Final answer
    x = 4,498.94

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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.