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Finding the Fourth Proportional to 1,048.88, 1,573.44 and 792.11

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Solution

The fourth proportional to 1,048.88, 1,573.44 and 792.11 is: 1,188.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.88 : 1,573.44 = 792.11 : x
  2. Step 2: Convert to fraction form
    1,048.88/1,573.44 = 792.11/x
  3. Step 3: Cross multiply
    1,048.88x = 1,573.44 × 792.11
  4. Step 4: Simplify right side
    1,048.88x = 1,246,329.69
  5. Step 5: Solve for x
    x = 1,246,329.69/1,048.88
  6. Step 6: Final answer
    x = 1,188.25

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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.