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Finding the Fourth Proportional to 942.99, 1,415.17 and 532.93

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Solution

The fourth proportional to 942.99, 1,415.17 and 532.93 is: 799.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.99 : 1,415.17 = 532.93 : x
  2. Step 2: Convert to fraction form
    942.99/1,415.17 = 532.93/x
  3. Step 3: Cross multiply
    942.99x = 1,415.17 × 532.93
  4. Step 4: Simplify right side
    942.99x = 754,186.33
  5. Step 5: Solve for x
    x = 754,186.33/942.99
  6. Step 6: Final answer
    x = 799.78

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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.