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Finding the Fourth Proportional to 907.28, 1,252.04 and 514.38

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Solution

The fourth proportional to 907.28, 1,252.04 and 514.38 is: 709.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.28 : 1,252.04 = 514.38 : x
  2. Step 2: Convert to fraction form
    907.28/1,252.04 = 514.38/x
  3. Step 3: Cross multiply
    907.28x = 1,252.04 × 514.38
  4. Step 4: Simplify right side
    907.28x = 644,024.34
  5. Step 5: Solve for x
    x = 644,024.34/907.28
  6. Step 6: Final answer
    x = 709.84

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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.