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Finding the Fourth Proportional to 1,033.32, 1,425.70 and 591.24

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Solution

The fourth proportional to 1,033.32, 1,425.70 and 591.24 is: 815.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.32 : 1,425.70 = 591.24 : x
  2. Step 2: Convert to fraction form
    1,033.32/1,425.70 = 591.24/x
  3. Step 3: Cross multiply
    1,033.32x = 1,425.70 × 591.24
  4. Step 4: Simplify right side
    1,033.32x = 842,930.87
  5. Step 5: Solve for x
    x = 842,930.87/1,033.32
  6. Step 6: Final answer
    x = 815.75

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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.