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Finding the Fourth Proportional to 3,543.76, 5,315.64 and 2,924.80

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Solution

The fourth proportional to 3,543.76, 5,315.64 and 2,924.80 is: 4,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.76 : 5,315.64 = 2,924.80 : x
  2. Step 2: Convert to fraction form
    3,543.76/5,315.64 = 2,924.80/x
  3. Step 3: Cross multiply
    3,543.76x = 5,315.64 × 2,924.80
  4. Step 4: Simplify right side
    3,543.76x = 15,547,183.87
  5. Step 5: Solve for x
    x = 15,547,183.87/3,543.76
  6. Step 6: Final answer
    x = 4,387.20

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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.