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Finding the Fourth Proportional to 1,052.70, 1,578.12 and 532.02

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Solution

The fourth proportional to 1,052.70, 1,578.12 and 532.02 is: 797.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.70 : 1,578.12 = 532.02 : x
  2. Step 2: Convert to fraction form
    1,052.70/1,578.12 = 532.02/x
  3. Step 3: Cross multiply
    1,052.70x = 1,578.12 × 532.02
  4. Step 4: Simplify right side
    1,052.70x = 839,591.40
  5. Step 5: Solve for x
    x = 839,591.40/1,052.70
  6. Step 6: Final answer
    x = 797.56

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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.