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Finding the Fourth Proportional to 316,498.79, 436,769.06 and 173,268.06

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Solution

The fourth proportional to 316,498.79, 436,769.06 and 173,268.06 is: 239,110.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,498.79 : 436,769.06 = 173,268.06 : x
  2. Step 2: Convert to fraction form
    316,498.79/436,769.06 = 173,268.06/x
  3. Step 3: Cross multiply
    316,498.79x = 436,769.06 × 173,268.06
  4. Step 4: Simplify right side
    316,498.79x = 75,678,126,827.88
  5. Step 5: Solve for x
    x = 75,678,126,827.88/316,498.79
  6. Step 6: Final answer
    x = 239,110.32

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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.