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Finding the Fourth Proportional to 1,126.14, 1,553.88 and 752.52

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Solution

The fourth proportional to 1,126.14, 1,553.88 and 752.52 is: 1,038.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.14 : 1,553.88 = 752.52 : x
  2. Step 2: Convert to fraction form
    1,126.14/1,553.88 = 752.52/x
  3. Step 3: Cross multiply
    1,126.14x = 1,553.88 × 752.52
  4. Step 4: Simplify right side
    1,126.14x = 1,169,325.78
  5. Step 5: Solve for x
    x = 1,169,325.78/1,126.14
  6. Step 6: Final answer
    x = 1,038.35

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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.