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Finding the Fourth Proportional to 316,061.84, 436,129.62 and 187,004.27

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Solution

The fourth proportional to 316,061.84, 436,129.62 and 187,004.27 is: 258,044.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,061.84 : 436,129.62 = 187,004.27 : x
  2. Step 2: Convert to fraction form
    316,061.84/436,129.62 = 187,004.27/x
  3. Step 3: Cross multiply
    316,061.84x = 436,129.62 × 187,004.27
  4. Step 4: Simplify right side
    316,061.84x = 81,558,101,213.48
  5. Step 5: Solve for x
    x = 81,558,101,213.48/316,061.84
  6. Step 6: Final answer
    x = 258,044.76

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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.