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Finding the Fourth Proportional to 7,775.72, 10,722.01 and 5,253.45

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Solution

The fourth proportional to 7,775.72, 10,722.01 and 5,253.45 is: 7,244.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.72 : 10,722.01 = 5,253.45 : x
  2. Step 2: Convert to fraction form
    7,775.72/10,722.01 = 5,253.45/x
  3. Step 3: Cross multiply
    7,775.72x = 10,722.01 × 5,253.45
  4. Step 4: Simplify right side
    7,775.72x = 56,327,578.57
  5. Step 5: Solve for x
    x = 56,327,578.57/7,775.72
  6. Step 6: Final answer
    x = 7,244.04

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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.