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Finding the Fourth Proportional to 316,653.66, 436,982.72 and 171,461.03

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Solution

The fourth proportional to 316,653.66, 436,982.72 and 171,461.03 is: 236,616.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,653.66 : 436,982.72 = 171,461.03 : x
  2. Step 2: Convert to fraction form
    316,653.66/436,982.72 = 171,461.03/x
  3. Step 3: Cross multiply
    316,653.66x = 436,982.72 × 171,461.03
  4. Step 4: Simplify right side
    316,653.66x = 74,925,504,221.18
  5. Step 5: Solve for x
    x = 74,925,504,221.18/316,653.66
  6. Step 6: Final answer
    x = 236,616.57

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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.