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Finding the Fourth Proportional to 7,442.88, 11,158.56 and 3,336

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Solution

The fourth proportional to 7,442.88, 11,158.56 and 3,336 is: 5,001.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,442.88 : 11,158.56 = 3,336 : x
  2. Step 2: Convert to fraction form
    7,442.88/11,158.56 = 3,336/x
  3. Step 3: Cross multiply
    7,442.88x = 11,158.56 × 3,336
  4. Step 4: Simplify right side
    7,442.88x = 37,224,956.16
  5. Step 5: Solve for x
    x = 37,224,956.16/7,442.88
  6. Step 6: Final answer
    x = 5,001.42

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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.