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Finding the Fourth Proportional to 5,222.79, 7,207.52 and 2,865.03

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Solution

The fourth proportional to 5,222.79, 7,207.52 and 2,865.03 is: 3,953.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,222.79 : 7,207.52 = 2,865.03 : x
  2. Step 2: Convert to fraction form
    5,222.79/7,207.52 = 2,865.03/x
  3. Step 3: Cross multiply
    5,222.79x = 7,207.52 × 2,865.03
  4. Step 4: Simplify right side
    5,222.79x = 20,649,746.70
  5. Step 5: Solve for x
    x = 20,649,746.70/5,222.79
  6. Step 6: Final answer
    x = 3,953.78

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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.