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Finding the Fourth Proportional to 316,876.79, 437,291.70 and 171,684.93

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Solution

The fourth proportional to 316,876.79, 437,291.70 and 171,684.93 is: 236,926.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,876.79 : 437,291.70 = 171,684.93 : x
  2. Step 2: Convert to fraction form
    316,876.79/437,291.70 = 171,684.93/x
  3. Step 3: Cross multiply
    316,876.79x = 437,291.70 × 171,684.93
  4. Step 4: Simplify right side
    316,876.79x = 75,076,394,904.08
  5. Step 5: Solve for x
    x = 75,076,394,904.08/316,876.79
  6. Step 6: Final answer
    x = 236,926.14

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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.