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Finding the Fourth Proportional to 316,663.16, 436,995.84 and 171,470.54

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Solution

The fourth proportional to 316,663.16, 436,995.84 and 171,470.54 is: 236,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,663.16 : 436,995.84 = 171,470.54 : x
  2. Step 2: Convert to fraction form
    316,663.16/436,995.84 = 171,470.54/x
  3. Step 3: Cross multiply
    316,663.16x = 436,995.84 × 171,470.54
  4. Step 4: Simplify right side
    316,663.16x = 74,931,912,662.55
  5. Step 5: Solve for x
    x = 74,931,912,662.55/316,663.16
  6. Step 6: Final answer
    x = 236,629.71

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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.