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Finding the Fourth Proportional to 2,352.74, 3,529.12 and 709.28

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Solution

The fourth proportional to 2,352.74, 3,529.12 and 709.28 is: 1,063.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,352.74 : 3,529.12 = 709.28 : x
  2. Step 2: Convert to fraction form
    2,352.74/3,529.12 = 709.28/x
  3. Step 3: Cross multiply
    2,352.74x = 3,529.12 × 709.28
  4. Step 4: Simplify right side
    2,352.74x = 2,503,114.81
  5. Step 5: Solve for x
    x = 2,503,114.81/2,352.74
  6. Step 6: Final answer
    x = 1,063.92

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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.