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Finding the Fourth Proportional to 5,707.68, 7,876.72 and 3,349.76

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Solution

The fourth proportional to 5,707.68, 7,876.72 and 3,349.76 is: 4,622.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,707.68 : 7,876.72 = 3,349.76 : x
  2. Step 2: Convert to fraction form
    5,707.68/7,876.72 = 3,349.76/x
  3. Step 3: Cross multiply
    5,707.68x = 7,876.72 × 3,349.76
  4. Step 4: Simplify right side
    5,707.68x = 26,385,121.59
  5. Step 5: Solve for x
    x = 26,385,121.59/5,707.68
  6. Step 6: Final answer
    x = 4,622.74

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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.