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Finding the Fourth Proportional to 6,574.72, 9,071.76 and 3,779.68

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Solution

The fourth proportional to 6,574.72, 9,071.76 and 3,779.68 is: 5,215.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,574.72 : 9,071.76 = 3,779.68 : x
  2. Step 2: Convert to fraction form
    6,574.72/9,071.76 = 3,779.68/x
  3. Step 3: Cross multiply
    6,574.72x = 9,071.76 × 3,779.68
  4. Step 4: Simplify right side
    6,574.72x = 34,288,349.84
  5. Step 5: Solve for x
    x = 34,288,349.84/6,574.72
  6. Step 6: Final answer
    x = 5,215.18

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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.