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Finding the Fourth Proportional to 1,020.13, 1,528.20 and 532.00

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Solution

The fourth proportional to 1,020.13, 1,528.20 and 532.00 is: 796.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.13 : 1,528.20 = 532.00 : x
  2. Step 2: Convert to fraction form
    1,020.13/1,528.20 = 532.00/x
  3. Step 3: Cross multiply
    1,020.13x = 1,528.20 × 532.00
  4. Step 4: Simplify right side
    1,020.13x = 813,004.31
  5. Step 5: Solve for x
    x = 813,004.31/1,020.13
  6. Step 6: Final answer
    x = 796.96

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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.