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Finding the Fourth Proportional to 336, 463.68 and 186.64

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Solution

The fourth proportional to 336, 463.68 and 186.64 is: 257.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    336 : 463.68 = 186.64 : x
  2. Step 2: Convert to fraction form
    336/463.68 = 186.64/x
  3. Step 3: Cross multiply
    336x = 463.68 × 186.64
  4. Step 4: Simplify right side
    336x = 86,541.24
  5. Step 5: Solve for x
    x = 86,541.24/336
  6. Step 6: Final answer
    x = 257.56

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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.