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Finding the Fourth Proportional to 3,714.84, 5,572.20 and 903.70

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Solution

The fourth proportional to 3,714.84, 5,572.20 and 903.70 is: 1,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,714.84 : 5,572.20 = 903.70 : x
  2. Step 2: Convert to fraction form
    3,714.84/5,572.20 = 903.70/x
  3. Step 3: Cross multiply
    3,714.84x = 5,572.20 × 903.70
  4. Step 4: Simplify right side
    3,714.84x = 5,035,576.15
  5. Step 5: Solve for x
    x = 5,035,576.15/3,714.84
  6. Step 6: Final answer
    x = 1,355.53

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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.